/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:03:12,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:03:12,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:03:12,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:03:12,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:03:12,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:03:12,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:03:12,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:03:12,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:03:12,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:03:12,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:03:12,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:03:12,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:03:12,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:03:12,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:03:12,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:03:12,897 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:03:12,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:03:12,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:03:12,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:03:12,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:03:12,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:03:12,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:03:12,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:03:12,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:03:12,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:03:12,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:03:12,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:03:12,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:03:12,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:03:12,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:03:12,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:03:12,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:03:12,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:03:12,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:03:12,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:03:13,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:03:13,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:03:13,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:03:13,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:03:13,119 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:03:13,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-03-03 17:03:13,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8116269c/3a2c7a32277e4ede9b7df3057e14bbcd/FLAGf633e4c5d [2022-03-03 17:03:13,560 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:03:13,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-03-03 17:03:13,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8116269c/3a2c7a32277e4ede9b7df3057e14bbcd/FLAGf633e4c5d [2022-03-03 17:03:13,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8116269c/3a2c7a32277e4ede9b7df3057e14bbcd [2022-03-03 17:03:13,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:03:13,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:03:13,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:03:13,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:03:13,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:03:13,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:03:13" (1/1) ... [2022-03-03 17:03:13,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f78c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:13, skipping insertion in model container [2022-03-03 17:03:13,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:03:13" (1/1) ... [2022-03-03 17:03:14,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:03:14,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:03:14,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-03-03 17:03:14,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:03:14,216 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:03:14,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-03-03 17:03:14,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:03:14,262 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:03:14,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14 WrapperNode [2022-03-03 17:03:14,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:03:14,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:03:14,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:03:14,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:03:14,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,303 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-03-03 17:03:14,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:03:14,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:03:14,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:03:14,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:03:14,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:03:14,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:03:14,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:03:14,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:03:14,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (1/1) ... [2022-03-03 17:03:14,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:03:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:14,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:03:14,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:03:14,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:03:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:03:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:03:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:03:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:03:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:03:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:03:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:03:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:03:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:03:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:03:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:03:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:03:14,414 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:03:14,485 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:03:14,486 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:03:14,763 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:03:14,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:03:14,774 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-03 17:03:14,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:03:14 BoogieIcfgContainer [2022-03-03 17:03:14,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:03:14,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:03:14,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:03:14,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:03:14,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:03:13" (1/3) ... [2022-03-03 17:03:14,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a0b0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:03:14, skipping insertion in model container [2022-03-03 17:03:14,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:03:14" (2/3) ... [2022-03-03 17:03:14,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a0b0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:03:14, skipping insertion in model container [2022-03-03 17:03:14,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:03:14" (3/3) ... [2022-03-03 17:03:14,783 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-03-03 17:03:14,787 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:03:14,788 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:03:14,788 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:03:14,788 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:03:14,834 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,835 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,836 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,836 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,836 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,837 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,838 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,838 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,838 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,838 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,839 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,839 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,839 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,841 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,841 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,844 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,847 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,847 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,847 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,850 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,851 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,851 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,851 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,852 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,852 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,852 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,852 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,853 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,853 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,853 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,854 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,855 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,855 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,855 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,856 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,856 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,856 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,856 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,858 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,858 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,862 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,862 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,862 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,862 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,862 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,862 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,863 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,863 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,863 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,863 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,863 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,864 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,865 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,866 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,867 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,868 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,870 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,871 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,872 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,872 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,874 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:03:14,879 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:03:14,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:03:14,945 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:03:14,945 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:03:14,964 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 228 places, 246 transitions, 508 flow [2022-03-03 17:03:15,168 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:15,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:03:15,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:15,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:15,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1888425211, now seen corresponding path program 1 times [2022-03-03 17:03:15,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:15,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319436147] [2022-03-03 17:03:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:15,568 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:15,568 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319436147] [2022-03-03 17:03:15,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319436147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:15,569 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:15,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:03:15,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275628370] [2022-03-03 17:03:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:15,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:03:15,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:15,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:03:15,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:03:15,614 INFO L87 Difference]: Start difference. First operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:15,725 INFO L93 Difference]: Finished difference Result 5062 states and 14867 transitions. [2022-03-03 17:03:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:03:15,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-03-03 17:03:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:15,788 INFO L225 Difference]: With dead ends: 5062 [2022-03-03 17:03:15,788 INFO L226 Difference]: Without dead ends: 5055 [2022-03-03 17:03:15,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:03:15,797 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:15,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-03-03 17:03:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5055. [2022-03-03 17:03:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5054 states have (on average 2.9402453502176495) internal successors, (14860), 5054 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 14860 transitions. [2022-03-03 17:03:16,065 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 14860 transitions. Word has length 139 [2022-03-03 17:03:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:16,068 INFO L470 AbstractCegarLoop]: Abstraction has 5055 states and 14860 transitions. [2022-03-03 17:03:16,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 14860 transitions. [2022-03-03 17:03:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-03 17:03:16,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:16,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:16,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:03:16,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1099516835, now seen corresponding path program 1 times [2022-03-03 17:03:16,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:16,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823328996] [2022-03-03 17:03:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:16,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:16,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823328996] [2022-03-03 17:03:16,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823328996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:16,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:16,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:03:16,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574083133] [2022-03-03 17:03:16,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:16,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:03:16,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:03:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:16,325 INFO L87 Difference]: Start difference. First operand 5055 states and 14860 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:16,406 INFO L93 Difference]: Finished difference Result 5771 states and 16742 transitions. [2022-03-03 17:03:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:03:16,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-03-03 17:03:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:16,441 INFO L225 Difference]: With dead ends: 5771 [2022-03-03 17:03:16,441 INFO L226 Difference]: Without dead ends: 5771 [2022-03-03 17:03:16,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:16,444 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 99 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:16,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 433 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-03-03 17:03:16,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5194. [2022-03-03 17:03:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 5193 states have (on average 2.938571153475833) internal successors, (15260), 5193 states have internal predecessors, (15260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 15260 transitions. [2022-03-03 17:03:16,675 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 15260 transitions. Word has length 139 [2022-03-03 17:03:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:16,680 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 15260 transitions. [2022-03-03 17:03:16,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 15260 transitions. [2022-03-03 17:03:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-03 17:03:16,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:16,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:16,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:03:16,697 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 689073211, now seen corresponding path program 1 times [2022-03-03 17:03:16,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:16,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7911190] [2022-03-03 17:03:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:16,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:16,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:16,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7911190] [2022-03-03 17:03:16,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7911190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:16,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:16,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:03:16,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865437804] [2022-03-03 17:03:16,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:16,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:03:16,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:16,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:03:16,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:16,872 INFO L87 Difference]: Start difference. First operand 5194 states and 15260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:16,944 INFO L93 Difference]: Finished difference Result 6050 states and 17445 transitions. [2022-03-03 17:03:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:03:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-03-03 17:03:16,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:16,994 INFO L225 Difference]: With dead ends: 6050 [2022-03-03 17:03:16,995 INFO L226 Difference]: Without dead ends: 6050 [2022-03-03 17:03:16,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:17,001 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 88 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:17,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 436 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-03-03 17:03:17,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 5340. [2022-03-03 17:03:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 2.9363176624836114) internal successors, (15677), 5339 states have internal predecessors, (15677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 15677 transitions. [2022-03-03 17:03:17,212 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 15677 transitions. Word has length 140 [2022-03-03 17:03:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:17,212 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 15677 transitions. [2022-03-03 17:03:17,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 15677 transitions. [2022-03-03 17:03:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:17,226 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:17,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:17,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:03:17,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:17,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1007108905, now seen corresponding path program 1 times [2022-03-03 17:03:17,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:17,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090844997] [2022-03-03 17:03:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:18,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:18,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090844997] [2022-03-03 17:03:18,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090844997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:18,041 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:18,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:03:18,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20464753] [2022-03-03 17:03:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:18,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:03:18,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:03:18,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:03:18,047 INFO L87 Difference]: Start difference. First operand 5340 states and 15677 transitions. Second operand has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:19,574 INFO L93 Difference]: Finished difference Result 17892 states and 52122 transitions. [2022-03-03 17:03:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:03:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:19,641 INFO L225 Difference]: With dead ends: 17892 [2022-03-03 17:03:19,641 INFO L226 Difference]: Without dead ends: 17721 [2022-03-03 17:03:19,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:03:19,650 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3616 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3616 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:19,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3616 Valid, 3192 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:03:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2022-03-03 17:03:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 9090. [2022-03-03 17:03:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9090 states, 9089 states have (on average 2.942457916162394) internal successors, (26744), 9089 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 26744 transitions. [2022-03-03 17:03:20,006 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 26744 transitions. Word has length 141 [2022-03-03 17:03:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:20,007 INFO L470 AbstractCegarLoop]: Abstraction has 9090 states and 26744 transitions. [2022-03-03 17:03:20,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,007 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 26744 transitions. [2022-03-03 17:03:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:20,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:20,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:20,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:03:20,029 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash -810308121, now seen corresponding path program 1 times [2022-03-03 17:03:20,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:20,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157761803] [2022-03-03 17:03:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:20,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:20,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:20,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157761803] [2022-03-03 17:03:20,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157761803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:20,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:20,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:03:20,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850519628] [2022-03-03 17:03:20,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:20,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:03:20,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:03:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:20,137 INFO L87 Difference]: Start difference. First operand 9090 states and 26744 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:20,211 INFO L93 Difference]: Finished difference Result 9363 states and 26702 transitions. [2022-03-03 17:03:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:03:20,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:20,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:20,236 INFO L225 Difference]: With dead ends: 9363 [2022-03-03 17:03:20,236 INFO L226 Difference]: Without dead ends: 9363 [2022-03-03 17:03:20,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:20,237 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 92 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:20,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 376 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2022-03-03 17:03:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 9189. [2022-03-03 17:03:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9189 states, 9188 states have (on average 2.866238572050501) internal successors, (26335), 9188 states have internal predecessors, (26335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9189 states to 9189 states and 26335 transitions. [2022-03-03 17:03:20,526 INFO L78 Accepts]: Start accepts. Automaton has 9189 states and 26335 transitions. Word has length 141 [2022-03-03 17:03:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:20,527 INFO L470 AbstractCegarLoop]: Abstraction has 9189 states and 26335 transitions. [2022-03-03 17:03:20,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9189 states and 26335 transitions. [2022-03-03 17:03:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:20,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:20,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:20,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:03:20,546 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:20,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1850227483, now seen corresponding path program 1 times [2022-03-03 17:03:20,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:20,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752120022] [2022-03-03 17:03:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:20,589 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:20,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752120022] [2022-03-03 17:03:20,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752120022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:20,589 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:20,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:03:20,590 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813090066] [2022-03-03 17:03:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:20,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:03:20,590 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:03:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:20,591 INFO L87 Difference]: Start difference. First operand 9189 states and 26335 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:20,652 INFO L93 Difference]: Finished difference Result 8228 states and 23405 transitions. [2022-03-03 17:03:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:03:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:20,676 INFO L225 Difference]: With dead ends: 8228 [2022-03-03 17:03:20,676 INFO L226 Difference]: Without dead ends: 8228 [2022-03-03 17:03:20,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:20,677 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 38 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:20,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 418 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-03-03 17:03:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8162. [2022-03-03 17:03:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8543070702119837) internal successors, (23294), 8161 states have internal predecessors, (23294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23294 transitions. [2022-03-03 17:03:20,965 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23294 transitions. Word has length 141 [2022-03-03 17:03:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:20,966 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23294 transitions. [2022-03-03 17:03:20,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23294 transitions. [2022-03-03 17:03:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:20,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:20,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:20,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:03:20,986 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 627322787, now seen corresponding path program 1 times [2022-03-03 17:03:20,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:20,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183643229] [2022-03-03 17:03:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:21,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:21,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183643229] [2022-03-03 17:03:21,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183643229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:21,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:21,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:03:21,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44959317] [2022-03-03 17:03:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:21,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:03:21,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:03:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:21,039 INFO L87 Difference]: Start difference. First operand 8162 states and 23294 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:21,164 INFO L93 Difference]: Finished difference Result 8443 states and 23912 transitions. [2022-03-03 17:03:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:03:21,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:21,186 INFO L225 Difference]: With dead ends: 8443 [2022-03-03 17:03:21,186 INFO L226 Difference]: Without dead ends: 8443 [2022-03-03 17:03:21,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:03:21,188 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 30 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:21,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 432 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2022-03-03 17:03:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 8261. [2022-03-03 17:03:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 8260 states have (on average 2.846852300242131) internal successors, (23515), 8260 states have internal predecessors, (23515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 23515 transitions. [2022-03-03 17:03:21,383 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 23515 transitions. Word has length 141 [2022-03-03 17:03:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:21,384 INFO L470 AbstractCegarLoop]: Abstraction has 8261 states and 23515 transitions. [2022-03-03 17:03:21,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 23515 transitions. [2022-03-03 17:03:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:21,403 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:21,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:21,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 17:03:21,404 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1619956611, now seen corresponding path program 1 times [2022-03-03 17:03:21,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:21,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182642741] [2022-03-03 17:03:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:21,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:21,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:21,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182642741] [2022-03-03 17:03:21,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182642741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:21,520 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:21,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:21,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947622046] [2022-03-03 17:03:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:21,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:21,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:21,522 INFO L87 Difference]: Start difference. First operand 8261 states and 23515 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:21,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:21,766 INFO L93 Difference]: Finished difference Result 8550 states and 24135 transitions. [2022-03-03 17:03:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:03:21,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:21,788 INFO L225 Difference]: With dead ends: 8550 [2022-03-03 17:03:21,789 INFO L226 Difference]: Without dead ends: 8343 [2022-03-03 17:03:21,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:03:21,789 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 117 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:21,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1269 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2022-03-03 17:03:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8184. [2022-03-03 17:03:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8183 states have (on average 2.8502994011976046) internal successors, (23324), 8183 states have internal predecessors, (23324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 23324 transitions. [2022-03-03 17:03:21,963 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 23324 transitions. Word has length 141 [2022-03-03 17:03:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:21,963 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 23324 transitions. [2022-03-03 17:03:21,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 23324 transitions. [2022-03-03 17:03:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:21,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:21,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:21,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 17:03:21,986 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1621927651, now seen corresponding path program 2 times [2022-03-03 17:03:21,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:21,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131240782] [2022-03-03 17:03:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:21,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:22,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:22,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131240782] [2022-03-03 17:03:22,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131240782] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:22,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:22,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:22,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493685484] [2022-03-03 17:03:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:22,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:22,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:22,222 INFO L87 Difference]: Start difference. First operand 8184 states and 23324 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:22,384 INFO L93 Difference]: Finished difference Result 8366 states and 23739 transitions. [2022-03-03 17:03:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:03:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:22,409 INFO L225 Difference]: With dead ends: 8366 [2022-03-03 17:03:22,409 INFO L226 Difference]: Without dead ends: 8259 [2022-03-03 17:03:22,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:22,412 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 49 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:22,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1197 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-03-03 17:03:22,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8188. [2022-03-03 17:03:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8187 states have (on average 2.8497618175155734) internal successors, (23331), 8187 states have internal predecessors, (23331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 23331 transitions. [2022-03-03 17:03:22,639 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 23331 transitions. Word has length 141 [2022-03-03 17:03:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:22,640 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 23331 transitions. [2022-03-03 17:03:22,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 23331 transitions. [2022-03-03 17:03:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:22,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:22,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:22,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 17:03:22,660 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1818903025, now seen corresponding path program 3 times [2022-03-03 17:03:22,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:22,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211647525] [2022-03-03 17:03:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:22,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:22,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:22,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211647525] [2022-03-03 17:03:22,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211647525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:22,797 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:22,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:22,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216275314] [2022-03-03 17:03:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:22,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:22,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:22,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:22,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:22,799 INFO L87 Difference]: Start difference. First operand 8188 states and 23331 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:23,036 INFO L93 Difference]: Finished difference Result 8340 states and 23672 transitions. [2022-03-03 17:03:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:03:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:23,058 INFO L225 Difference]: With dead ends: 8340 [2022-03-03 17:03:23,058 INFO L226 Difference]: Without dead ends: 8210 [2022-03-03 17:03:23,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:23,059 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 35 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:23,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1585 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-03-03 17:03:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8162. [2022-03-03 17:03:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8511211861291508) internal successors, (23268), 8161 states have internal predecessors, (23268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23268 transitions. [2022-03-03 17:03:23,243 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23268 transitions. Word has length 141 [2022-03-03 17:03:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:23,243 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23268 transitions. [2022-03-03 17:03:23,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23268 transitions. [2022-03-03 17:03:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:23,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:23,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:23,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 17:03:23,261 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1913029597, now seen corresponding path program 4 times [2022-03-03 17:03:23,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:23,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836183928] [2022-03-03 17:03:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:23,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:23,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:23,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836183928] [2022-03-03 17:03:23,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836183928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:23,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:23,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:23,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820104904] [2022-03-03 17:03:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:23,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:23,384 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:23,385 INFO L87 Difference]: Start difference. First operand 8162 states and 23268 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:23,559 INFO L93 Difference]: Finished difference Result 8502 states and 24043 transitions. [2022-03-03 17:03:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:03:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:23,587 INFO L225 Difference]: With dead ends: 8502 [2022-03-03 17:03:23,587 INFO L226 Difference]: Without dead ends: 8382 [2022-03-03 17:03:23,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:03:23,589 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 124 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:23,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1057 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2022-03-03 17:03:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 8226. [2022-03-03 17:03:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 8225 states have (on average 2.84887537993921) internal successors, (23432), 8225 states have internal predecessors, (23432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 23432 transitions. [2022-03-03 17:03:23,781 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 23432 transitions. Word has length 141 [2022-03-03 17:03:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:23,781 INFO L470 AbstractCegarLoop]: Abstraction has 8226 states and 23432 transitions. [2022-03-03 17:03:23,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 23432 transitions. [2022-03-03 17:03:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:23,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:23,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:23,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 17:03:23,799 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:23,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1405816603, now seen corresponding path program 5 times [2022-03-03 17:03:23,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:23,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793524654] [2022-03-03 17:03:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:23,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:23,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:23,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793524654] [2022-03-03 17:03:23,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793524654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:23,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:23,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:23,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107127546] [2022-03-03 17:03:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:23,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:23,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:23,946 INFO L87 Difference]: Start difference. First operand 8226 states and 23432 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:24,121 INFO L93 Difference]: Finished difference Result 8414 states and 23859 transitions. [2022-03-03 17:03:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:03:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:24,150 INFO L225 Difference]: With dead ends: 8414 [2022-03-03 17:03:24,150 INFO L226 Difference]: Without dead ends: 8307 [2022-03-03 17:03:24,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:03:24,151 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 59 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:24,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1160 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2022-03-03 17:03:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 8230. [2022-03-03 17:03:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8229 states have (on average 2.8483412322274884) internal successors, (23439), 8229 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 23439 transitions. [2022-03-03 17:03:24,356 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 23439 transitions. Word has length 141 [2022-03-03 17:03:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:24,356 INFO L470 AbstractCegarLoop]: Abstraction has 8230 states and 23439 transitions. [2022-03-03 17:03:24,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 23439 transitions. [2022-03-03 17:03:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:24,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:24,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:24,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 17:03:24,375 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1602791977, now seen corresponding path program 6 times [2022-03-03 17:03:24,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:24,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108212331] [2022-03-03 17:03:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:24,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:24,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108212331] [2022-03-03 17:03:24,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108212331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:24,508 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:24,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:24,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453950492] [2022-03-03 17:03:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:24,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:24,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:24,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:24,510 INFO L87 Difference]: Start difference. First operand 8230 states and 23439 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:24,680 INFO L93 Difference]: Finished difference Result 8388 states and 23792 transitions. [2022-03-03 17:03:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:03:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:24,704 INFO L225 Difference]: With dead ends: 8388 [2022-03-03 17:03:24,705 INFO L226 Difference]: Without dead ends: 8254 [2022-03-03 17:03:24,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:24,706 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 48 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:24,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1178 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2022-03-03 17:03:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8200. [2022-03-03 17:03:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 2.849737772899134) internal successors, (23365), 8199 states have internal predecessors, (23365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 23365 transitions. [2022-03-03 17:03:24,901 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 23365 transitions. Word has length 141 [2022-03-03 17:03:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:24,902 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 23365 transitions. [2022-03-03 17:03:24,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 23365 transitions. [2022-03-03 17:03:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:24,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:24,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 17:03:24,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2098111613, now seen corresponding path program 1 times [2022-03-03 17:03:24,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:24,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592397986] [2022-03-03 17:03:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:25,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:25,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592397986] [2022-03-03 17:03:25,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592397986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:25,047 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:25,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:25,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504347185] [2022-03-03 17:03:25,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:25,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:25,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:25,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:25,048 INFO L87 Difference]: Start difference. First operand 8200 states and 23365 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:25,204 INFO L93 Difference]: Finished difference Result 8460 states and 23922 transitions. [2022-03-03 17:03:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:03:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:25,230 INFO L225 Difference]: With dead ends: 8460 [2022-03-03 17:03:25,230 INFO L226 Difference]: Without dead ends: 8340 [2022-03-03 17:03:25,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:03:25,231 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 112 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:25,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1044 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2022-03-03 17:03:25,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 8204. [2022-03-03 17:03:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8204 states, 8203 states have (on average 2.8468852858710227) internal successors, (23353), 8203 states have internal predecessors, (23353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 23353 transitions. [2022-03-03 17:03:25,397 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 23353 transitions. Word has length 141 [2022-03-03 17:03:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:25,397 INFO L470 AbstractCegarLoop]: Abstraction has 8204 states and 23353 transitions. [2022-03-03 17:03:25,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 23353 transitions. [2022-03-03 17:03:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:25,464 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:25,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:25,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-03 17:03:25,465 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1105477789, now seen corresponding path program 1 times [2022-03-03 17:03:25,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:25,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545869052] [2022-03-03 17:03:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:25,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:25,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545869052] [2022-03-03 17:03:25,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545869052] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:25,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:25,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 17:03:25,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28230870] [2022-03-03 17:03:25,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:25,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:03:25,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:03:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:03:25,506 INFO L87 Difference]: Start difference. First operand 8204 states and 23353 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:25,567 INFO L93 Difference]: Finished difference Result 8223 states and 23294 transitions. [2022-03-03 17:03:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:03:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:25,589 INFO L225 Difference]: With dead ends: 8223 [2022-03-03 17:03:25,590 INFO L226 Difference]: Without dead ends: 8142 [2022-03-03 17:03:25,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:03:25,593 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 55 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:25,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 636 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2022-03-03 17:03:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8016. [2022-03-03 17:03:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 8015 states have (on average 2.8510293200249532) internal successors, (22851), 8015 states have internal predecessors, (22851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 22851 transitions. [2022-03-03 17:03:25,762 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 22851 transitions. Word has length 141 [2022-03-03 17:03:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:25,763 INFO L470 AbstractCegarLoop]: Abstraction has 8016 states and 22851 transitions. [2022-03-03 17:03:25,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 22851 transitions. [2022-03-03 17:03:25,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:25,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:25,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:25,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-03 17:03:25,779 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 54678179, now seen corresponding path program 2 times [2022-03-03 17:03:25,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:25,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595985609] [2022-03-03 17:03:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:25,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:25,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595985609] [2022-03-03 17:03:25,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595985609] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:25,889 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:25,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:25,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313623272] [2022-03-03 17:03:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:25,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:25,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:25,890 INFO L87 Difference]: Start difference. First operand 8016 states and 22851 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:26,053 INFO L93 Difference]: Finished difference Result 8144 states and 23136 transitions. [2022-03-03 17:03:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:03:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:26,074 INFO L225 Difference]: With dead ends: 8144 [2022-03-03 17:03:26,075 INFO L226 Difference]: Without dead ends: 8043 [2022-03-03 17:03:26,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:26,076 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 49 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:26,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1180 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2022-03-03 17:03:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8020. [2022-03-03 17:03:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8020 states, 8019 states have (on average 2.850480109739369) internal successors, (22858), 8019 states have internal predecessors, (22858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 22858 transitions. [2022-03-03 17:03:26,242 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 22858 transitions. Word has length 141 [2022-03-03 17:03:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:26,243 INFO L470 AbstractCegarLoop]: Abstraction has 8020 states and 22858 transitions. [2022-03-03 17:03:26,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 22858 transitions. [2022-03-03 17:03:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:26,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:26,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:26,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-03 17:03:26,259 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash 251653553, now seen corresponding path program 3 times [2022-03-03 17:03:26,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:26,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697911702] [2022-03-03 17:03:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:26,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:26,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697911702] [2022-03-03 17:03:26,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697911702] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:26,356 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:26,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:26,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421314144] [2022-03-03 17:03:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:26,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:26,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:26,357 INFO L87 Difference]: Start difference. First operand 8020 states and 22858 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:26,528 INFO L93 Difference]: Finished difference Result 8118 states and 23069 transitions. [2022-03-03 17:03:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:03:26,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:26,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:26,548 INFO L225 Difference]: With dead ends: 8118 [2022-03-03 17:03:26,548 INFO L226 Difference]: Without dead ends: 7994 [2022-03-03 17:03:26,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:26,549 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 39 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:26,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1153 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2022-03-03 17:03:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 7994. [2022-03-03 17:03:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7994 states, 7993 states have (on average 2.851870386588265) internal successors, (22795), 7993 states have internal predecessors, (22795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 22795 transitions. [2022-03-03 17:03:26,702 INFO L78 Accepts]: Start accepts. Automaton has 7994 states and 22795 transitions. Word has length 141 [2022-03-03 17:03:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:26,702 INFO L470 AbstractCegarLoop]: Abstraction has 7994 states and 22795 transitions. [2022-03-03 17:03:26,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 7994 states and 22795 transitions. [2022-03-03 17:03:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:26,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:26,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:26,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-03 17:03:26,719 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:26,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash 215087779, now seen corresponding path program 4 times [2022-03-03 17:03:26,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:26,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401906175] [2022-03-03 17:03:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:26,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:26,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401906175] [2022-03-03 17:03:26,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401906175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:26,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:26,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:26,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756845673] [2022-03-03 17:03:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:26,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:26,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:26,831 INFO L87 Difference]: Start difference. First operand 7994 states and 22795 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:27,033 INFO L93 Difference]: Finished difference Result 8308 states and 23493 transitions. [2022-03-03 17:03:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:03:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:27,053 INFO L225 Difference]: With dead ends: 8308 [2022-03-03 17:03:27,053 INFO L226 Difference]: Without dead ends: 8146 [2022-03-03 17:03:27,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:03:27,054 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 109 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:27,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1593 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-03-03 17:03:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8010. [2022-03-03 17:03:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8010 states, 8009 states have (on average 2.849669122237483) internal successors, (22823), 8009 states have internal predecessors, (22823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 22823 transitions. [2022-03-03 17:03:27,213 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 22823 transitions. Word has length 141 [2022-03-03 17:03:27,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:27,213 INFO L470 AbstractCegarLoop]: Abstraction has 8010 states and 22823 transitions. [2022-03-03 17:03:27,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 22823 transitions. [2022-03-03 17:03:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:27,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:27,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:27,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-03 17:03:27,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -934606403, now seen corresponding path program 5 times [2022-03-03 17:03:27,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:27,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173472502] [2022-03-03 17:03:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:27,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:27,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173472502] [2022-03-03 17:03:27,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173472502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:27,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:27,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:27,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889750497] [2022-03-03 17:03:27,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:27,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:27,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:27,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:27,327 INFO L87 Difference]: Start difference. First operand 8010 states and 22823 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:27,499 INFO L93 Difference]: Finished difference Result 8138 states and 23108 transitions. [2022-03-03 17:03:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:03:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:27,520 INFO L225 Difference]: With dead ends: 8138 [2022-03-03 17:03:27,520 INFO L226 Difference]: Without dead ends: 8037 [2022-03-03 17:03:27,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:27,521 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 52 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:27,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1132 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2022-03-03 17:03:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 8014. [2022-03-03 17:03:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8014 states, 8013 states have (on average 2.8491201797079744) internal successors, (22830), 8013 states have internal predecessors, (22830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8014 states to 8014 states and 22830 transitions. [2022-03-03 17:03:27,750 INFO L78 Accepts]: Start accepts. Automaton has 8014 states and 22830 transitions. Word has length 141 [2022-03-03 17:03:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:27,750 INFO L470 AbstractCegarLoop]: Abstraction has 8014 states and 22830 transitions. [2022-03-03 17:03:27,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 8014 states and 22830 transitions. [2022-03-03 17:03:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:27,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:27,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:27,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-03 17:03:27,767 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash -737631029, now seen corresponding path program 6 times [2022-03-03 17:03:27,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:27,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498731869] [2022-03-03 17:03:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:27,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:27,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:27,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498731869] [2022-03-03 17:03:27,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498731869] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:27,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:27,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:03:27,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585240375] [2022-03-03 17:03:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:27,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:03:27,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:03:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:03:27,876 INFO L87 Difference]: Start difference. First operand 8014 states and 22830 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:28,009 INFO L93 Difference]: Finished difference Result 8112 states and 23041 transitions. [2022-03-03 17:03:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:03:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:28,030 INFO L225 Difference]: With dead ends: 8112 [2022-03-03 17:03:28,031 INFO L226 Difference]: Without dead ends: 7960 [2022-03-03 17:03:28,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:03:28,032 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 47 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:28,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 930 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-03-03 17:03:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7960. [2022-03-03 17:03:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 7959 states have (on average 2.851865812287976) internal successors, (22698), 7959 states have internal predecessors, (22698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 22698 transitions. [2022-03-03 17:03:28,196 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 22698 transitions. Word has length 141 [2022-03-03 17:03:28,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:28,197 INFO L470 AbstractCegarLoop]: Abstraction has 7960 states and 22698 transitions. [2022-03-03 17:03:28,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 22698 transitions. [2022-03-03 17:03:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:03:28,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:28,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:28,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-03 17:03:28,212 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1753409837, now seen corresponding path program 2 times [2022-03-03 17:03:28,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:28,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628990482] [2022-03-03 17:03:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:28,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:28,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628990482] [2022-03-03 17:03:28,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628990482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:28,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:28,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 17:03:28,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768908345] [2022-03-03 17:03:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:28,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:03:28,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:03:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:03:28,250 INFO L87 Difference]: Start difference. First operand 7960 states and 22698 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:28,303 INFO L93 Difference]: Finished difference Result 7843 states and 22383 transitions. [2022-03-03 17:03:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:03:28,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-03 17:03:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:28,322 INFO L225 Difference]: With dead ends: 7843 [2022-03-03 17:03:28,322 INFO L226 Difference]: Without dead ends: 7745 [2022-03-03 17:03:28,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:03:28,323 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 16 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:28,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 423 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:03:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2022-03-03 17:03:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7745. [2022-03-03 17:03:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 7744 states have (on average 2.8574380165289255) internal successors, (22128), 7744 states have internal predecessors, (22128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 22128 transitions. [2022-03-03 17:03:28,482 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 22128 transitions. Word has length 141 [2022-03-03 17:03:28,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:28,482 INFO L470 AbstractCegarLoop]: Abstraction has 7745 states and 22128 transitions. [2022-03-03 17:03:28,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 22128 transitions. [2022-03-03 17:03:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:03:28,500 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:28,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:28,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-03 17:03:28,501 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:28,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1986433718, now seen corresponding path program 1 times [2022-03-03 17:03:28,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:28,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831277504] [2022-03-03 17:03:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:28,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:28,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:28,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831277504] [2022-03-03 17:03:28,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831277504] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:28,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000493447] [2022-03-03 17:03:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:28,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:28,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:28,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:28,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:03:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:28,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:03:28,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:29,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:03:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:30,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000493447] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:30,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:03:30,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-03-03 17:03:30,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87617264] [2022-03-03 17:03:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:30,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:03:30,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:30,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:03:30,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:03:30,112 INFO L87 Difference]: Start difference. First operand 7745 states and 22128 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:30,655 INFO L93 Difference]: Finished difference Result 13005 states and 36572 transitions. [2022-03-03 17:03:30,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:03:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-03 17:03:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:30,692 INFO L225 Difference]: With dead ends: 13005 [2022-03-03 17:03:30,692 INFO L226 Difference]: Without dead ends: 12924 [2022-03-03 17:03:30,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:03:30,694 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 878 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:30,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 2533 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:03:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-03-03 17:03:30,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 9243. [2022-03-03 17:03:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9242 states have (on average 2.8779484959965376) internal successors, (26598), 9242 states have internal predecessors, (26598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 26598 transitions. [2022-03-03 17:03:30,913 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 26598 transitions. Word has length 148 [2022-03-03 17:03:30,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:30,913 INFO L470 AbstractCegarLoop]: Abstraction has 9243 states and 26598 transitions. [2022-03-03 17:03:30,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:30,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 26598 transitions. [2022-03-03 17:03:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:03:30,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:30,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:30,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-03 17:03:31,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-03 17:03:31,128 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1487913134, now seen corresponding path program 2 times [2022-03-03 17:03:31,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:31,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417009554] [2022-03-03 17:03:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:31,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:31,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417009554] [2022-03-03 17:03:31,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417009554] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:31,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236313327] [2022-03-03 17:03:31,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:03:31,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:31,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:31,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:31,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:03:31,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-03 17:03:31,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:03:31,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 17:03:31,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:32,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:03:32,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236313327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:32,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:03:32,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 28 [2022-03-03 17:03:32,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888141240] [2022-03-03 17:03:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:32,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-03 17:03:32,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-03 17:03:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:03:32,410 INFO L87 Difference]: Start difference. First operand 9243 states and 26598 transitions. Second operand has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:33,487 INFO L93 Difference]: Finished difference Result 10514 states and 29630 transitions. [2022-03-03 17:03:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:03:33,488 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-03 17:03:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:33,513 INFO L225 Difference]: With dead ends: 10514 [2022-03-03 17:03:33,514 INFO L226 Difference]: Without dead ends: 10411 [2022-03-03 17:03:33,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:03:33,515 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 995 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:33,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2430 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:03:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2022-03-03 17:03:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 7793. [2022-03-03 17:03:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7792 states have (on average 2.8488193018480494) internal successors, (22198), 7792 states have internal predecessors, (22198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 22198 transitions. [2022-03-03 17:03:33,693 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 22198 transitions. Word has length 148 [2022-03-03 17:03:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:33,694 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 22198 transitions. [2022-03-03 17:03:33,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 22198 transitions. [2022-03-03 17:03:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:03:33,709 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:33,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:33,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:03:33,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-03 17:03:33,910 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2133376293, now seen corresponding path program 1 times [2022-03-03 17:03:33,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:33,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950125271] [2022-03-03 17:03:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:34,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:34,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950125271] [2022-03-03 17:03:34,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950125271] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:34,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114433778] [2022-03-03 17:03:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:34,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:34,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:34,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:34,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:03:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:34,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:03:34,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:34,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:03:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:35,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114433778] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:35,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:03:35,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-03-03 17:03:35,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174730381] [2022-03-03 17:03:35,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:35,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:03:35,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:03:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:03:35,440 INFO L87 Difference]: Start difference. First operand 7793 states and 22198 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:35,921 INFO L93 Difference]: Finished difference Result 13053 states and 36642 transitions. [2022-03-03 17:03:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:03:35,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-03 17:03:35,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:35,948 INFO L225 Difference]: With dead ends: 13053 [2022-03-03 17:03:35,948 INFO L226 Difference]: Without dead ends: 12966 [2022-03-03 17:03:35,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:03:35,949 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 964 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:35,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 2858 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:03:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-03-03 17:03:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 10881. [2022-03-03 17:03:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10881 states, 10880 states have (on average 2.8889705882352943) internal successors, (31432), 10880 states have internal predecessors, (31432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10881 states to 10881 states and 31432 transitions. [2022-03-03 17:03:36,192 INFO L78 Accepts]: Start accepts. Automaton has 10881 states and 31432 transitions. Word has length 148 [2022-03-03 17:03:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:36,192 INFO L470 AbstractCegarLoop]: Abstraction has 10881 states and 31432 transitions. [2022-03-03 17:03:36,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 31432 transitions. [2022-03-03 17:03:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:03:36,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:36,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:36,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:03:36,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:36,411 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1663070419, now seen corresponding path program 2 times [2022-03-03 17:03:36,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:36,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206679325] [2022-03-03 17:03:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:36,587 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:36,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206679325] [2022-03-03 17:03:36,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206679325] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:36,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127615877] [2022-03-03 17:03:36,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:03:36,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:36,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:36,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:03:36,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-03 17:03:36,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:03:36,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-03 17:03:36,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:37,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:03:37,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127615877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:37,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:03:37,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2022-03-03 17:03:37,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669112292] [2022-03-03 17:03:37,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:37,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-03 17:03:37,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-03 17:03:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:03:37,286 INFO L87 Difference]: Start difference. First operand 10881 states and 31432 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:37,797 INFO L93 Difference]: Finished difference Result 11334 states and 32482 transitions. [2022-03-03 17:03:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:03:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-03 17:03:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:37,828 INFO L225 Difference]: With dead ends: 11334 [2022-03-03 17:03:37,828 INFO L226 Difference]: Without dead ends: 11231 [2022-03-03 17:03:37,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:03:37,829 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 426 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:37,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1533 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2022-03-03 17:03:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 7794. [2022-03-03 17:03:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7794 states, 7793 states have (on average 2.847683818811754) internal successors, (22192), 7793 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 22192 transitions. [2022-03-03 17:03:38,012 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 22192 transitions. Word has length 148 [2022-03-03 17:03:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:38,012 INFO L470 AbstractCegarLoop]: Abstraction has 7794 states and 22192 transitions. [2022-03-03 17:03:38,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 22192 transitions. [2022-03-03 17:03:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-03 17:03:38,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:38,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:38,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-03 17:03:38,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:38,249 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:38,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2060043732, now seen corresponding path program 1 times [2022-03-03 17:03:38,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:38,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477480264] [2022-03-03 17:03:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:38,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:38,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477480264] [2022-03-03 17:03:38,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477480264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:38,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:38,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:03:38,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962143889] [2022-03-03 17:03:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:38,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:03:38,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:03:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:03:38,318 INFO L87 Difference]: Start difference. First operand 7794 states and 22192 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:38,461 INFO L93 Difference]: Finished difference Result 9154 states and 25619 transitions. [2022-03-03 17:03:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:03:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-03 17:03:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:38,482 INFO L225 Difference]: With dead ends: 9154 [2022-03-03 17:03:38,483 INFO L226 Difference]: Without dead ends: 9032 [2022-03-03 17:03:38,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:03:38,483 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 220 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:38,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1059 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2022-03-03 17:03:38,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 8431. [2022-03-03 17:03:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8431 states, 8430 states have (on average 2.82502965599051) internal successors, (23815), 8430 states have internal predecessors, (23815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 23815 transitions. [2022-03-03 17:03:38,652 INFO L78 Accepts]: Start accepts. Automaton has 8431 states and 23815 transitions. Word has length 154 [2022-03-03 17:03:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:38,652 INFO L470 AbstractCegarLoop]: Abstraction has 8431 states and 23815 transitions. [2022-03-03 17:03:38,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8431 states and 23815 transitions. [2022-03-03 17:03:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-03 17:03:38,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:38,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:38,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-03 17:03:38,668 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash -174767826, now seen corresponding path program 1 times [2022-03-03 17:03:38,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:38,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895739579] [2022-03-03 17:03:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:38,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:38,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:38,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895739579] [2022-03-03 17:03:38,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895739579] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:38,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:38,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:03:38,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459047105] [2022-03-03 17:03:38,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:38,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:03:38,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:38,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:03:38,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:03:38,731 INFO L87 Difference]: Start difference. First operand 8431 states and 23815 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:38,866 INFO L93 Difference]: Finished difference Result 7976 states and 22592 transitions. [2022-03-03 17:03:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:03:38,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-03 17:03:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:38,879 INFO L225 Difference]: With dead ends: 7976 [2022-03-03 17:03:38,880 INFO L226 Difference]: Without dead ends: 7766 [2022-03-03 17:03:38,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:03:38,880 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 132 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:38,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1058 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2022-03-03 17:03:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7761. [2022-03-03 17:03:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7761 states, 7760 states have (on average 2.855283505154639) internal successors, (22157), 7760 states have internal predecessors, (22157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 22157 transitions. [2022-03-03 17:03:39,012 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 22157 transitions. Word has length 154 [2022-03-03 17:03:39,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:39,012 INFO L470 AbstractCegarLoop]: Abstraction has 7761 states and 22157 transitions. [2022-03-03 17:03:39,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 22157 transitions. [2022-03-03 17:03:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-03-03 17:03:39,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:39,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:39,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-03 17:03:39,025 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2131040572, now seen corresponding path program 1 times [2022-03-03 17:03:39,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:39,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699308906] [2022-03-03 17:03:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:39,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:39,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:39,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699308906] [2022-03-03 17:03:39,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699308906] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:39,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898404889] [2022-03-03 17:03:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:39,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:39,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:39,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:39,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:03:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:39,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:03:39,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:39,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:03:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:03:40,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898404889] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:40,317 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:03:40,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-03-03 17:03:40,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145193419] [2022-03-03 17:03:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:40,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:03:40,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:03:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:03:40,319 INFO L87 Difference]: Start difference. First operand 7761 states and 22157 transitions. Second operand has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:40,625 INFO L93 Difference]: Finished difference Result 9967 states and 27609 transitions. [2022-03-03 17:03:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:03:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-03-03 17:03:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:40,643 INFO L225 Difference]: With dead ends: 9967 [2022-03-03 17:03:40,643 INFO L226 Difference]: Without dead ends: 9967 [2022-03-03 17:03:40,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:03:40,644 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1131 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:40,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1024 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:40,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-03-03 17:03:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 7947. [2022-03-03 17:03:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 2.8492323181474957) internal successors, (22640), 7946 states have internal predecessors, (22640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 22640 transitions. [2022-03-03 17:03:40,826 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 22640 transitions. Word has length 155 [2022-03-03 17:03:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:40,827 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 22640 transitions. [2022-03-03 17:03:40,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 22640 transitions. [2022-03-03 17:03:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-03 17:03:40,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:40,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:40,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:03:41,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 17:03:41,043 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1234806942, now seen corresponding path program 1 times [2022-03-03 17:03:41,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:41,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269123836] [2022-03-03 17:03:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:41,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:41,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269123836] [2022-03-03 17:03:41,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269123836] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:41,113 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:41,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:03:41,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058578642] [2022-03-03 17:03:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:41,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:03:41,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:03:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:03:41,114 INFO L87 Difference]: Start difference. First operand 7947 states and 22640 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:41,224 INFO L93 Difference]: Finished difference Result 5780 states and 15833 transitions. [2022-03-03 17:03:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:03:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-03 17:03:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:41,237 INFO L225 Difference]: With dead ends: 5780 [2022-03-03 17:03:41,237 INFO L226 Difference]: Without dead ends: 5658 [2022-03-03 17:03:41,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:03:41,239 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 625 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:41,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 795 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2022-03-03 17:03:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5257. [2022-03-03 17:03:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 2.776826484018265) internal successors, (14595), 5256 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 14595 transitions. [2022-03-03 17:03:41,324 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 14595 transitions. Word has length 161 [2022-03-03 17:03:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:41,324 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 14595 transitions. [2022-03-03 17:03:41,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 14595 transitions. [2022-03-03 17:03:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-03 17:03:41,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:41,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:41,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-03 17:03:41,332 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 825348796, now seen corresponding path program 1 times [2022-03-03 17:03:41,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:41,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844915538] [2022-03-03 17:03:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:41,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:41,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:41,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844915538] [2022-03-03 17:03:41,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844915538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:41,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:41,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 17:03:41,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376766740] [2022-03-03 17:03:41,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:41,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:03:41,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:41,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:03:41,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:03:41,397 INFO L87 Difference]: Start difference. First operand 5257 states and 14595 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:41,501 INFO L93 Difference]: Finished difference Result 4602 states and 12806 transitions. [2022-03-03 17:03:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:03:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-03 17:03:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:41,511 INFO L225 Difference]: With dead ends: 4602 [2022-03-03 17:03:41,511 INFO L226 Difference]: Without dead ends: 4425 [2022-03-03 17:03:41,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:03:41,512 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 369 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:41,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 832 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-03-03 17:03:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4420. [2022-03-03 17:03:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 2.807196198234895) internal successors, (12405), 4419 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 12405 transitions. [2022-03-03 17:03:41,594 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 12405 transitions. Word has length 161 [2022-03-03 17:03:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:41,594 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 12405 transitions. [2022-03-03 17:03:41,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 12405 transitions. [2022-03-03 17:03:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-03 17:03:41,602 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:41,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:41,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-03 17:03:41,602 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2054720919, now seen corresponding path program 1 times [2022-03-03 17:03:41,603 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:41,603 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596715312] [2022-03-03 17:03:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:41,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:41,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596715312] [2022-03-03 17:03:41,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596715312] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:41,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183895235] [2022-03-03 17:03:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:41,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:41,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:41,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:03:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:41,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:03:41,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:42,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:03:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:42,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183895235] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:42,735 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:03:42,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-03-03 17:03:42,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403707985] [2022-03-03 17:03:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:42,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-03 17:03:42,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-03 17:03:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:03:42,736 INFO L87 Difference]: Start difference. First operand 4420 states and 12405 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:42,951 INFO L93 Difference]: Finished difference Result 5196 states and 14341 transitions. [2022-03-03 17:03:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:03:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-03-03 17:03:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:42,962 INFO L225 Difference]: With dead ends: 5196 [2022-03-03 17:03:42,962 INFO L226 Difference]: Without dead ends: 5196 [2022-03-03 17:03:42,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:03:42,963 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 708 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:42,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 658 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:03:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2022-03-03 17:03:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4550. [2022-03-03 17:03:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4549 states have (on average 2.807210375906793) internal successors, (12770), 4549 states have internal predecessors, (12770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 12770 transitions. [2022-03-03 17:03:43,060 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 12770 transitions. Word has length 164 [2022-03-03 17:03:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:43,061 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 12770 transitions. [2022-03-03 17:03:43,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 12770 transitions. [2022-03-03 17:03:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-03-03 17:03:43,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:43,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:43,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:03:43,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:43,284 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1659523190, now seen corresponding path program 1 times [2022-03-03 17:03:43,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:43,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913842344] [2022-03-03 17:03:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:03:43,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:43,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913842344] [2022-03-03 17:03:43,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913842344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:43,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749614029] [2022-03-03 17:03:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:43,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:43,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:43,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:43,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:03:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:43,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-03 17:03:43,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:44,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:03:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:46,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749614029] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:03:46,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:03:46,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 46 [2022-03-03 17:03:46,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778270563] [2022-03-03 17:03:46,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:03:46,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 17:03:46,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 17:03:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:03:46,087 INFO L87 Difference]: Start difference. First operand 4550 states and 12770 transitions. Second operand has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:47,842 INFO L93 Difference]: Finished difference Result 18134 states and 50616 transitions. [2022-03-03 17:03:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:03:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-03-03 17:03:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:47,876 INFO L225 Difference]: With dead ends: 18134 [2022-03-03 17:03:47,876 INFO L226 Difference]: Without dead ends: 17924 [2022-03-03 17:03:47,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 319 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1157, Invalid=4849, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 17:03:47,878 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 2375 mSDsluCounter, 7334 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:47,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 7423 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:03:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2022-03-03 17:03:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 8265. [2022-03-03 17:03:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 2.8457163601161666) internal successors, (23517), 8264 states have internal predecessors, (23517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 23517 transitions. [2022-03-03 17:03:48,076 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 23517 transitions. Word has length 173 [2022-03-03 17:03:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:48,077 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 23517 transitions. [2022-03-03 17:03:48,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 23517 transitions. [2022-03-03 17:03:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:03:48,089 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:48,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:48,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:03:48,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:48,290 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:48,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash -130323262, now seen corresponding path program 1 times [2022-03-03 17:03:48,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:48,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948459610] [2022-03-03 17:03:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:48,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:48,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948459610] [2022-03-03 17:03:48,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948459610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:48,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:48,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:03:48,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734291696] [2022-03-03 17:03:48,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:48,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:03:48,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:03:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:03:48,733 INFO L87 Difference]: Start difference. First operand 8265 states and 23517 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:49,608 INFO L93 Difference]: Finished difference Result 20121 states and 57525 transitions. [2022-03-03 17:03:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:03:49,609 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:03:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:49,649 INFO L225 Difference]: With dead ends: 20121 [2022-03-03 17:03:49,649 INFO L226 Difference]: Without dead ends: 20121 [2022-03-03 17:03:49,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=429, Invalid=1293, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:03:49,650 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1371 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:49,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 3715 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:03:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2022-03-03 17:03:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 8909. [2022-03-03 17:03:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 2.8431746744499327) internal successors, (25327), 8908 states have internal predecessors, (25327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 25327 transitions. [2022-03-03 17:03:49,874 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 25327 transitions. Word has length 177 [2022-03-03 17:03:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:49,874 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 25327 transitions. [2022-03-03 17:03:49,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 25327 transitions. [2022-03-03 17:03:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:03:49,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:49,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:49,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-03 17:03:49,889 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 778847230, now seen corresponding path program 1 times [2022-03-03 17:03:49,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:49,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953578605] [2022-03-03 17:03:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:50,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:50,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953578605] [2022-03-03 17:03:50,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953578605] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:03:50,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350274827] [2022-03-03 17:03:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:50,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:03:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:03:50,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:03:50,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:03:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:50,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 17:03:50,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:03:50,963 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:03:50,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-03 17:03:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:51,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:03:51,277 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-03 17:03:51,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-03-03 17:03:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:51,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350274827] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:03:51,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:03:51,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-03 17:03:51,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296802671] [2022-03-03 17:03:51,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:03:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:03:51,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:03:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:03:51,466 INFO L87 Difference]: Start difference. First operand 8909 states and 25327 transitions. Second operand has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:53,437 INFO L93 Difference]: Finished difference Result 29545 states and 84669 transitions. [2022-03-03 17:03:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 17:03:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:03:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:53,524 INFO L225 Difference]: With dead ends: 29545 [2022-03-03 17:03:53,524 INFO L226 Difference]: Without dead ends: 29545 [2022-03-03 17:03:53,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1050, Invalid=3920, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:03:53,526 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1992 mSDsluCounter, 6697 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:53,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 7122 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1618 Invalid, 0 Unknown, 614 Unchecked, 0.8s Time] [2022-03-03 17:03:53,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29545 states. [2022-03-03 17:03:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29545 to 11625. [2022-03-03 17:03:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11625 states, 11624 states have (on average 2.8681176875430143) internal successors, (33339), 11624 states have internal predecessors, (33339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 33339 transitions. [2022-03-03 17:03:53,948 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 33339 transitions. Word has length 177 [2022-03-03 17:03:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:53,948 INFO L470 AbstractCegarLoop]: Abstraction has 11625 states and 33339 transitions. [2022-03-03 17:03:53,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 33339 transitions. [2022-03-03 17:03:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:03:53,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:53,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:53,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:03:54,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-03 17:03:54,168 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash 466177484, now seen corresponding path program 2 times [2022-03-03 17:03:54,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:54,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512690629] [2022-03-03 17:03:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:54,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:54,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512690629] [2022-03-03 17:03:54,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512690629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:54,644 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:54,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:03:54,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337994642] [2022-03-03 17:03:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:54,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:03:54,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:03:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:03:54,646 INFO L87 Difference]: Start difference. First operand 11625 states and 33339 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:55,275 INFO L93 Difference]: Finished difference Result 23067 states and 66157 transitions. [2022-03-03 17:03:55,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:03:55,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:03:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:55,340 INFO L225 Difference]: With dead ends: 23067 [2022-03-03 17:03:55,340 INFO L226 Difference]: Without dead ends: 23067 [2022-03-03 17:03:55,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:03:55,341 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1049 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:55,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 3223 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:03:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23067 states. [2022-03-03 17:03:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23067 to 11799. [2022-03-03 17:03:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11799 states, 11798 states have (on average 2.8687065604339717) internal successors, (33845), 11798 states have internal predecessors, (33845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 33845 transitions. [2022-03-03 17:03:55,735 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 33845 transitions. Word has length 177 [2022-03-03 17:03:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:55,735 INFO L470 AbstractCegarLoop]: Abstraction has 11799 states and 33845 transitions. [2022-03-03 17:03:55,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 33845 transitions. [2022-03-03 17:03:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:03:55,752 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:55,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:55,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-03 17:03:55,753 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -586655790, now seen corresponding path program 2 times [2022-03-03 17:03:55,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:55,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560078863] [2022-03-03 17:03:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:56,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:56,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560078863] [2022-03-03 17:03:56,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560078863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:56,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:56,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:03:56,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785502091] [2022-03-03 17:03:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:56,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:03:56,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:03:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:03:56,171 INFO L87 Difference]: Start difference. First operand 11799 states and 33845 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:56,812 INFO L93 Difference]: Finished difference Result 23171 states and 66451 transitions. [2022-03-03 17:03:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:03:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:03:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:56,863 INFO L225 Difference]: With dead ends: 23171 [2022-03-03 17:03:56,863 INFO L226 Difference]: Without dead ends: 23171 [2022-03-03 17:03:56,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:03:56,864 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1123 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:56,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3109 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:03:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23171 states. [2022-03-03 17:03:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23171 to 12037. [2022-03-03 17:03:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-03 17:03:57,149 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-03 17:03:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:57,149 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-03 17:03:57,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-03 17:03:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:03:57,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:57,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:57,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-03 17:03:57,167 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash -859187188, now seen corresponding path program 3 times [2022-03-03 17:03:57,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:57,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516583979] [2022-03-03 17:03:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:57,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:57,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516583979] [2022-03-03 17:03:57,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516583979] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:57,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:57,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:03:57,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501263789] [2022-03-03 17:03:57,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:57,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:03:57,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:57,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:03:57,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:03:57,598 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:58,213 INFO L93 Difference]: Finished difference Result 23085 states and 66203 transitions. [2022-03-03 17:03:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:03:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:03:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:58,263 INFO L225 Difference]: With dead ends: 23085 [2022-03-03 17:03:58,263 INFO L226 Difference]: Without dead ends: 23085 [2022-03-03 17:03:58,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:03:58,264 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1168 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:58,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2739 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:03:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2022-03-03 17:03:58,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 12037. [2022-03-03 17:03:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-03 17:03:58,534 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-03 17:03:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:03:58,535 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-03 17:03:58,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-03 17:03:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:03:58,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:03:58,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:03:58,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-03 17:03:58,553 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:03:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:03:58,553 INFO L85 PathProgramCache]: Analyzing trace with hash -395612446, now seen corresponding path program 1 times [2022-03-03 17:03:58,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:03:58,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904093260] [2022-03-03 17:03:58,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:03:58,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:03:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:03:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:03:59,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:03:59,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904093260] [2022-03-03 17:03:59,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904093260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:03:59,039 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:03:59,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:03:59,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774725722] [2022-03-03 17:03:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:03:59,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:03:59,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:03:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:03:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:03:59,040 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:03:59,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:03:59,820 INFO L93 Difference]: Finished difference Result 23197 states and 66527 transitions. [2022-03-03 17:03:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:03:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:03:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:03:59,872 INFO L225 Difference]: With dead ends: 23197 [2022-03-03 17:03:59,872 INFO L226 Difference]: Without dead ends: 23197 [2022-03-03 17:03:59,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:03:59,873 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1137 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:03:59,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 4134 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:03:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2022-03-03 17:04:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 12037. [2022-03-03 17:04:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-03 17:04:00,168 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-03 17:04:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:00,168 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-03 17:04:00,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-03 17:04:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:00,186 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:00,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:00,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-03 17:04:00,186 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1801101254, now seen corresponding path program 4 times [2022-03-03 17:04:00,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:00,187 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428125641] [2022-03-03 17:04:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:00,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:00,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428125641] [2022-03-03 17:04:00,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428125641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:00,701 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:00,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:00,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855752675] [2022-03-03 17:04:00,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:00,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:00,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:00,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:00,703 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:01,409 INFO L93 Difference]: Finished difference Result 23477 states and 67305 transitions. [2022-03-03 17:04:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:01,410 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:01,457 INFO L225 Difference]: With dead ends: 23477 [2022-03-03 17:04:01,457 INFO L226 Difference]: Without dead ends: 23477 [2022-03-03 17:04:01,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:04:01,458 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 927 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:01,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 3381 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2022-03-03 17:04:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 12021. [2022-03-03 17:04:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 12020 states have (on average 2.8681364392678868) internal successors, (34475), 12020 states have internal predecessors, (34475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 34475 transitions. [2022-03-03 17:04:01,739 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 34475 transitions. Word has length 177 [2022-03-03 17:04:01,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:01,739 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 34475 transitions. [2022-03-03 17:04:01,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:01,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 34475 transitions. [2022-03-03 17:04:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:01,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:01,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:01,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-03 17:04:01,760 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:01,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:01,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2095983646, now seen corresponding path program 2 times [2022-03-03 17:04:01,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:01,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295074820] [2022-03-03 17:04:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:02,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:02,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295074820] [2022-03-03 17:04:02,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295074820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:02,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:02,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:02,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580071127] [2022-03-03 17:04:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:02,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:02,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:02,148 INFO L87 Difference]: Start difference. First operand 12021 states and 34475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:02,906 INFO L93 Difference]: Finished difference Result 23261 states and 66703 transitions. [2022-03-03 17:04:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:02,906 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:02,951 INFO L225 Difference]: With dead ends: 23261 [2022-03-03 17:04:02,951 INFO L226 Difference]: Without dead ends: 23261 [2022-03-03 17:04:02,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:04:02,952 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1039 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:02,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3628 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2022-03-03 17:04:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 12037. [2022-03-03 17:04:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-03 17:04:03,229 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-03 17:04:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:03,229 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-03 17:04:03,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-03 17:04:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:03,247 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:03,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-03 17:04:03,247 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1620224, now seen corresponding path program 3 times [2022-03-03 17:04:03,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:03,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967671064] [2022-03-03 17:04:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:03,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:03,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967671064] [2022-03-03 17:04:03,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967671064] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:03,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:03,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:03,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269941853] [2022-03-03 17:04:03,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:03,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:03,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:03,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:03,701 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:04,517 INFO L93 Difference]: Finished difference Result 24125 states and 69175 transitions. [2022-03-03 17:04:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:04:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:04,565 INFO L225 Difference]: With dead ends: 24125 [2022-03-03 17:04:04,566 INFO L226 Difference]: Without dead ends: 24125 [2022-03-03 17:04:04,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:04:04,567 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1098 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:04,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3076 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24125 states. [2022-03-03 17:04:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24125 to 12005. [2022-03-03 17:04:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12005 states, 12004 states have (on average 2.8682939020326557) internal successors, (34431), 12004 states have internal predecessors, (34431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 34431 transitions. [2022-03-03 17:04:04,829 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 34431 transitions. Word has length 177 [2022-03-03 17:04:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:04,829 INFO L470 AbstractCegarLoop]: Abstraction has 12005 states and 34431 transitions. [2022-03-03 17:04:04,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 34431 transitions. [2022-03-03 17:04:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:04,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:04,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:04,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-03 17:04:04,846 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:04,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash -464494442, now seen corresponding path program 3 times [2022-03-03 17:04:04,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:04,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449682648] [2022-03-03 17:04:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:05,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:05,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449682648] [2022-03-03 17:04:05,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449682648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:05,336 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:05,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:05,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50577112] [2022-03-03 17:04:05,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:05,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:05,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:05,337 INFO L87 Difference]: Start difference. First operand 12005 states and 34431 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:06,129 INFO L93 Difference]: Finished difference Result 23945 states and 68795 transitions. [2022-03-03 17:04:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:04:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:06,175 INFO L225 Difference]: With dead ends: 23945 [2022-03-03 17:04:06,175 INFO L226 Difference]: Without dead ends: 23945 [2022-03-03 17:04:06,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:04:06,176 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1084 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:06,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3384 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23945 states. [2022-03-03 17:04:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23945 to 12163. [2022-03-03 17:04:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12163 states, 12162 states have (on average 2.867702680480184) internal successors, (34877), 12162 states have internal predecessors, (34877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 34877 transitions. [2022-03-03 17:04:06,459 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 34877 transitions. Word has length 177 [2022-03-03 17:04:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:06,459 INFO L470 AbstractCegarLoop]: Abstraction has 12163 states and 34877 transitions. [2022-03-03 17:04:06,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 34877 transitions. [2022-03-03 17:04:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:06,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:06,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-03 17:04:06,483 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1731127998, now seen corresponding path program 5 times [2022-03-03 17:04:06,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:06,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265628096] [2022-03-03 17:04:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:06,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:06,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265628096] [2022-03-03 17:04:06,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265628096] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:06,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:06,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:06,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171525279] [2022-03-03 17:04:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:06,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:06,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:06,898 INFO L87 Difference]: Start difference. First operand 12163 states and 34877 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:07,716 INFO L93 Difference]: Finished difference Result 23735 states and 68113 transitions. [2022-03-03 17:04:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:04:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:07,769 INFO L225 Difference]: With dead ends: 23735 [2022-03-03 17:04:07,769 INFO L226 Difference]: Without dead ends: 23735 [2022-03-03 17:04:07,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:04:07,770 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 853 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:07,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3565 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2022-03-03 17:04:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 12195. [2022-03-03 17:04:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12195 states, 12194 states have (on average 2.867393800229621) internal successors, (34965), 12194 states have internal predecessors, (34965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12195 states to 12195 states and 34965 transitions. [2022-03-03 17:04:08,067 INFO L78 Accepts]: Start accepts. Automaton has 12195 states and 34965 transitions. Word has length 177 [2022-03-03 17:04:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:08,067 INFO L470 AbstractCegarLoop]: Abstraction has 12195 states and 34965 transitions. [2022-03-03 17:04:08,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 12195 states and 34965 transitions. [2022-03-03 17:04:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:08,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:08,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:08,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-03 17:04:08,086 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:08,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2137801898, now seen corresponding path program 6 times [2022-03-03 17:04:08,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:08,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015665859] [2022-03-03 17:04:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:08,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:08,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015665859] [2022-03-03 17:04:08,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015665859] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:04:08,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674265708] [2022-03-03 17:04:08,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:04:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:04:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:04:08,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:04:08,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:04:08,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:04:08,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:04:08,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 17:04:08,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:04:09,223 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:04:09,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-03 17:04:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:09,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:04:09,473 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-03 17:04:09,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-03-03 17:04:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:09,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674265708] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:04:09,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:04:09,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-03 17:04:09,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660138213] [2022-03-03 17:04:09,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:04:09,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:04:09,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:04:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:04:09,660 INFO L87 Difference]: Start difference. First operand 12195 states and 34965 transitions. Second operand has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:12,114 INFO L93 Difference]: Finished difference Result 35572 states and 102436 transitions. [2022-03-03 17:04:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:04:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:12,196 INFO L225 Difference]: With dead ends: 35572 [2022-03-03 17:04:12,197 INFO L226 Difference]: Without dead ends: 35572 [2022-03-03 17:04:12,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1236, Invalid=5084, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:04:12,199 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1967 mSDsluCounter, 7848 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:12,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 8196 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2284 Invalid, 0 Unknown, 430 Unchecked, 0.9s Time] [2022-03-03 17:04:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35572 states. [2022-03-03 17:04:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35572 to 14807. [2022-03-03 17:04:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-03 17:04:12,697 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-03 17:04:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:12,698 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-03 17:04:12,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-03 17:04:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:12,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:12,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:12,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:04:12,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:04:12,922 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1374048124, now seen corresponding path program 4 times [2022-03-03 17:04:12,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:12,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828703435] [2022-03-03 17:04:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:13,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:13,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828703435] [2022-03-03 17:04:13,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828703435] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:13,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:13,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:13,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377336839] [2022-03-03 17:04:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:13,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:13,379 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:13,380 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:14,211 INFO L93 Difference]: Finished difference Result 26641 states and 76609 transitions. [2022-03-03 17:04:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:14,211 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:14,271 INFO L225 Difference]: With dead ends: 26641 [2022-03-03 17:04:14,271 INFO L226 Difference]: Without dead ends: 26641 [2022-03-03 17:04:14,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:04:14,272 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 788 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:14,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3709 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26641 states. [2022-03-03 17:04:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26641 to 14823. [2022-03-03 17:04:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-03-03 17:04:14,629 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-03-03 17:04:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:14,630 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-03-03 17:04:14,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-03-03 17:04:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:14,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:14,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:14,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-03 17:04:14,654 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:14,654 INFO L85 PathProgramCache]: Analyzing trace with hash -152865438, now seen corresponding path program 1 times [2022-03-03 17:04:14,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:14,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476790028] [2022-03-03 17:04:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:14,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:15,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:15,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476790028] [2022-03-03 17:04:15,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476790028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:15,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:15,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:15,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891399751] [2022-03-03 17:04:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:15,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:15,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:15,052 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:15,717 INFO L93 Difference]: Finished difference Result 26381 states and 75879 transitions. [2022-03-03 17:04:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:15,775 INFO L225 Difference]: With dead ends: 26381 [2022-03-03 17:04:15,775 INFO L226 Difference]: Without dead ends: 26381 [2022-03-03 17:04:15,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:04:15,776 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1149 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:15,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 3056 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26381 states. [2022-03-03 17:04:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26381 to 14831. [2022-03-03 17:04:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881928523263655) internal successors, (42739), 14830 states have internal predecessors, (42739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42739 transitions. [2022-03-03 17:04:16,101 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42739 transitions. Word has length 177 [2022-03-03 17:04:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:16,101 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42739 transitions. [2022-03-03 17:04:16,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42739 transitions. [2022-03-03 17:04:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:16,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:16,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:16,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-03 17:04:16,125 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash 48683452, now seen corresponding path program 7 times [2022-03-03 17:04:16,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:16,125 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343179813] [2022-03-03 17:04:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:16,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:16,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:16,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343179813] [2022-03-03 17:04:16,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343179813] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:16,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:16,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:16,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434741335] [2022-03-03 17:04:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:16,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:16,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:16,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:16,534 INFO L87 Difference]: Start difference. First operand 14831 states and 42739 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:17,226 INFO L93 Difference]: Finished difference Result 26033 states and 74891 transitions. [2022-03-03 17:04:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:17,227 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:17,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:17,288 INFO L225 Difference]: With dead ends: 26033 [2022-03-03 17:04:17,288 INFO L226 Difference]: Without dead ends: 26033 [2022-03-03 17:04:17,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:04:17,289 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1231 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:17,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 3036 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2022-03-03 17:04:17,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 14823. [2022-03-03 17:04:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-03-03 17:04:17,696 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-03-03 17:04:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:17,696 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-03-03 17:04:17,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:17,697 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-03-03 17:04:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:17,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:17,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:17,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-03 17:04:17,722 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash 512258194, now seen corresponding path program 4 times [2022-03-03 17:04:17,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:17,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179871298] [2022-03-03 17:04:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:17,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:18,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:18,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179871298] [2022-03-03 17:04:18,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179871298] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:18,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:18,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:18,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769953997] [2022-03-03 17:04:18,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:18,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:18,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:18,149 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:18,856 INFO L93 Difference]: Finished difference Result 26145 states and 75215 transitions. [2022-03-03 17:04:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:18,923 INFO L225 Difference]: With dead ends: 26145 [2022-03-03 17:04:18,924 INFO L226 Difference]: Without dead ends: 26145 [2022-03-03 17:04:18,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:04:18,924 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1375 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:18,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3191 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26145 states. [2022-03-03 17:04:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26145 to 14807. [2022-03-03 17:04:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-03 17:04:19,254 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-03 17:04:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:19,254 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-03 17:04:19,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-03 17:04:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:19,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:19,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:19,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-03 17:04:19,278 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:19,279 INFO L85 PathProgramCache]: Analyzing trace with hash -301873108, now seen corresponding path program 5 times [2022-03-03 17:04:19,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:19,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750891571] [2022-03-03 17:04:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:19,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:19,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:19,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750891571] [2022-03-03 17:04:19,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750891571] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:19,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:19,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:19,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527033326] [2022-03-03 17:04:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:19,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:19,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:19,685 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:20,375 INFO L93 Difference]: Finished difference Result 26625 states and 76533 transitions. [2022-03-03 17:04:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:20,376 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:20,433 INFO L225 Difference]: With dead ends: 26625 [2022-03-03 17:04:20,433 INFO L226 Difference]: Without dead ends: 26625 [2022-03-03 17:04:20,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:04:20,434 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 979 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:20,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3064 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26625 states. [2022-03-03 17:04:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26625 to 14839. [2022-03-03 17:04:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14839 states, 14838 states have (on average 2.882396549400189) internal successors, (42769), 14838 states have internal predecessors, (42769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14839 states to 14839 states and 42769 transitions. [2022-03-03 17:04:20,760 INFO L78 Accepts]: Start accepts. Automaton has 14839 states and 42769 transitions. Word has length 177 [2022-03-03 17:04:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:20,760 INFO L470 AbstractCegarLoop]: Abstraction has 14839 states and 42769 transitions. [2022-03-03 17:04:20,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14839 states and 42769 transitions. [2022-03-03 17:04:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:20,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:20,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:20,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-03 17:04:20,784 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1828786670, now seen corresponding path program 2 times [2022-03-03 17:04:20,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:20,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326657027] [2022-03-03 17:04:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:21,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:21,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326657027] [2022-03-03 17:04:21,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326657027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:21,203 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:21,203 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:21,203 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801100064] [2022-03-03 17:04:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:21,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:21,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:21,205 INFO L87 Difference]: Start difference. First operand 14839 states and 42769 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:21,877 INFO L93 Difference]: Finished difference Result 26373 states and 75825 transitions. [2022-03-03 17:04:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:21,878 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:22,022 INFO L225 Difference]: With dead ends: 26373 [2022-03-03 17:04:22,023 INFO L226 Difference]: Without dead ends: 26373 [2022-03-03 17:04:22,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:04:22,023 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1091 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:22,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2904 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26373 states. [2022-03-03 17:04:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26373 to 14855. [2022-03-03 17:04:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-03-03 17:04:22,315 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-03-03 17:04:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:22,315 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-03-03 17:04:22,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-03-03 17:04:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:22,339 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:22,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:22,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-03 17:04:22,339 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1627237780, now seen corresponding path program 8 times [2022-03-03 17:04:22,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:22,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380087345] [2022-03-03 17:04:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:22,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:22,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380087345] [2022-03-03 17:04:22,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380087345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:22,774 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:22,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:22,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858949008] [2022-03-03 17:04:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:22,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:22,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:22,775 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:23,516 INFO L93 Difference]: Finished difference Result 26041 states and 74881 transitions. [2022-03-03 17:04:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:04:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:23,571 INFO L225 Difference]: With dead ends: 26041 [2022-03-03 17:04:23,571 INFO L226 Difference]: Without dead ends: 26041 [2022-03-03 17:04:23,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:04:23,572 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1281 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:23,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 3368 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:23,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2022-03-03 17:04:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 14855. [2022-03-03 17:04:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-03-03 17:04:23,916 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-03-03 17:04:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:23,917 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-03-03 17:04:23,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-03-03 17:04:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:23,939 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:23,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:23,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-03 17:04:23,940 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1163663038, now seen corresponding path program 5 times [2022-03-03 17:04:23,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:23,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314192534] [2022-03-03 17:04:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:24,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:24,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314192534] [2022-03-03 17:04:24,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314192534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:24,371 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:24,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:24,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387066666] [2022-03-03 17:04:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:24,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:24,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:24,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:24,373 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:25,005 INFO L93 Difference]: Finished difference Result 26161 states and 75227 transitions. [2022-03-03 17:04:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:04:25,005 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:25,060 INFO L225 Difference]: With dead ends: 26161 [2022-03-03 17:04:25,060 INFO L226 Difference]: Without dead ends: 26161 [2022-03-03 17:04:25,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:04:25,061 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1103 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:25,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 2480 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:25,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2022-03-03 17:04:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 14847. [2022-03-03 17:04:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-03-03 17:04:25,399 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-03-03 17:04:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:25,399 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-03-03 17:04:25,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-03-03 17:04:25,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:25,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:25,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:25,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-03 17:04:25,427 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:25,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:25,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1033050662, now seen corresponding path program 9 times [2022-03-03 17:04:25,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:25,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601433054] [2022-03-03 17:04:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:25,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:25,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:25,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601433054] [2022-03-03 17:04:25,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601433054] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:25,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:25,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:25,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324589093] [2022-03-03 17:04:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:25,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:25,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:25,928 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:26,818 INFO L93 Difference]: Finished difference Result 26377 states and 75813 transitions. [2022-03-03 17:04:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:26,819 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:26,872 INFO L225 Difference]: With dead ends: 26377 [2022-03-03 17:04:26,872 INFO L226 Difference]: Without dead ends: 26377 [2022-03-03 17:04:26,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:04:26,873 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1346 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:26,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 3152 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26377 states. [2022-03-03 17:04:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26377 to 14831. [2022-03-03 17:04:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881389076196898) internal successors, (42731), 14830 states have internal predecessors, (42731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42731 transitions. [2022-03-03 17:04:27,190 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42731 transitions. Word has length 177 [2022-03-03 17:04:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:27,190 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42731 transitions. [2022-03-03 17:04:27,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42731 transitions. [2022-03-03 17:04:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:27,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:27,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:27,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-03 17:04:27,214 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:27,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1327933054, now seen corresponding path program 6 times [2022-03-03 17:04:27,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:27,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615838682] [2022-03-03 17:04:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:27,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:27,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:27,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615838682] [2022-03-03 17:04:27,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615838682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:27,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:27,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:27,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731544785] [2022-03-03 17:04:27,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:27,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:27,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:27,622 INFO L87 Difference]: Start difference. First operand 14831 states and 42731 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:28,367 INFO L93 Difference]: Finished difference Result 26169 states and 75233 transitions. [2022-03-03 17:04:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:28,367 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:28,426 INFO L225 Difference]: With dead ends: 26169 [2022-03-03 17:04:28,426 INFO L226 Difference]: Without dead ends: 26169 [2022-03-03 17:04:28,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:04:28,427 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1042 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:28,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3255 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2022-03-03 17:04:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 14847. [2022-03-03 17:04:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-03-03 17:04:28,770 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-03-03 17:04:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:28,770 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-03-03 17:04:28,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-03-03 17:04:28,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:28,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:28,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:28,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-03 17:04:28,795 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash -766430368, now seen corresponding path program 7 times [2022-03-03 17:04:28,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:28,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716976176] [2022-03-03 17:04:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:28,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:29,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:29,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716976176] [2022-03-03 17:04:29,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716976176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:29,224 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:29,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:29,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904599235] [2022-03-03 17:04:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:29,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:29,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:29,226 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:29,998 INFO L93 Difference]: Finished difference Result 27033 states and 77705 transitions. [2022-03-03 17:04:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:04:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:30,061 INFO L225 Difference]: With dead ends: 27033 [2022-03-03 17:04:30,061 INFO L226 Difference]: Without dead ends: 27033 [2022-03-03 17:04:30,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:04:30,062 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1051 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:30,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3142 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:30,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27033 states. [2022-03-03 17:04:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27033 to 14807. [2022-03-03 17:04:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-03 17:04:30,409 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-03 17:04:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:30,409 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-03 17:04:30,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-03 17:04:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:30,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:30,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:30,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-03 17:04:30,434 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash 482623248, now seen corresponding path program 6 times [2022-03-03 17:04:30,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:30,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501443463] [2022-03-03 17:04:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:30,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:30,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:30,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501443463] [2022-03-03 17:04:30,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501443463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:30,881 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:30,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:30,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125085229] [2022-03-03 17:04:30,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:30,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:30,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:30,883 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:31,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:31,752 INFO L93 Difference]: Finished difference Result 30614 states and 87966 transitions. [2022-03-03 17:04:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:04:31,753 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:31,823 INFO L225 Difference]: With dead ends: 30614 [2022-03-03 17:04:31,823 INFO L226 Difference]: Without dead ends: 30614 [2022-03-03 17:04:31,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:04:31,824 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 1374 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:31,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 3104 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30614 states. [2022-03-03 17:04:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30614 to 15091. [2022-03-03 17:04:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 15090 states have (on average 2.8790589794565937) internal successors, (43445), 15090 states have internal predecessors, (43445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 43445 transitions. [2022-03-03 17:04:32,217 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 43445 transitions. Word has length 177 [2022-03-03 17:04:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:32,218 INFO L470 AbstractCegarLoop]: Abstraction has 15091 states and 43445 transitions. [2022-03-03 17:04:32,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 43445 transitions. [2022-03-03 17:04:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:32,242 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:32,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:32,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-03 17:04:32,243 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1354846062, now seen corresponding path program 7 times [2022-03-03 17:04:32,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:32,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617188034] [2022-03-03 17:04:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:32,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:32,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617188034] [2022-03-03 17:04:32,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617188034] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:32,682 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:32,682 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:32,682 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675274708] [2022-03-03 17:04:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:32,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:32,683 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:32,684 INFO L87 Difference]: Start difference. First operand 15091 states and 43445 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:33,445 INFO L93 Difference]: Finished difference Result 27911 states and 80413 transitions. [2022-03-03 17:04:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:33,446 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:33,509 INFO L225 Difference]: With dead ends: 27911 [2022-03-03 17:04:33,509 INFO L226 Difference]: Without dead ends: 27911 [2022-03-03 17:04:33,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:04:33,510 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 1182 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:33,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 3308 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27911 states. [2022-03-03 17:04:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27911 to 15099. [2022-03-03 17:04:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-03-03 17:04:33,863 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-03-03 17:04:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:33,863 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-03-03 17:04:33,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-03-03 17:04:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:33,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:33,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:33,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-03 17:04:33,886 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1218579082, now seen corresponding path program 3 times [2022-03-03 17:04:33,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:33,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592076837] [2022-03-03 17:04:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:33,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:34,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:34,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592076837] [2022-03-03 17:04:34,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592076837] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:34,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:34,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:34,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943495776] [2022-03-03 17:04:34,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:34,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:34,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:34,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:34,341 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:35,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:35,065 INFO L93 Difference]: Finished difference Result 27361 states and 78781 transitions. [2022-03-03 17:04:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:35,127 INFO L225 Difference]: With dead ends: 27361 [2022-03-03 17:04:35,127 INFO L226 Difference]: Without dead ends: 27361 [2022-03-03 17:04:35,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:04:35,128 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 909 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:35,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 3132 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27361 states. [2022-03-03 17:04:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27361 to 15131. [2022-03-03 17:04:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15131 states, 15130 states have (on average 2.8792465300727033) internal successors, (43563), 15130 states have internal predecessors, (43563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15131 states to 15131 states and 43563 transitions. [2022-03-03 17:04:35,475 INFO L78 Accepts]: Start accepts. Automaton has 15131 states and 43563 transitions. Word has length 177 [2022-03-03 17:04:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:35,475 INFO L470 AbstractCegarLoop]: Abstraction has 15131 states and 43563 transitions. [2022-03-03 17:04:35,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:35,476 INFO L276 IsEmpty]: Start isEmpty. Operand 15131 states and 43563 transitions. [2022-03-03 17:04:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:35,500 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:35,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:35,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-03 17:04:35,500 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:35,501 INFO L85 PathProgramCache]: Analyzing trace with hash 24291170, now seen corresponding path program 4 times [2022-03-03 17:04:35,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:35,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516412057] [2022-03-03 17:04:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:35,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:35,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:35,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516412057] [2022-03-03 17:04:35,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516412057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:04:35,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122517740] [2022-03-03 17:04:35,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:04:35,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:04:35,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:04:35,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:04:35,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:04:36,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:04:36,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:04:36,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 17:04:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:04:36,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:04:36,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:04:36,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:04:37,086 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:04:37,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:04:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:04:37,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:04:39,390 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_996 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996))) (let ((.cse1 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-03 17:04:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:04:39,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122517740] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:04:39,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:04:39,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-03-03 17:04:39,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451023555] [2022-03-03 17:04:39,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:04:39,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 17:04:39,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 17:04:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1780, Unknown=5, NotChecked=86, Total=2070 [2022-03-03 17:04:39,526 INFO L87 Difference]: Start difference. First operand 15131 states and 43563 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:43,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:43,061 INFO L93 Difference]: Finished difference Result 31404 states and 90428 transitions. [2022-03-03 17:04:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:04:43,061 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:43,128 INFO L225 Difference]: With dead ends: 31404 [2022-03-03 17:04:43,129 INFO L226 Difference]: Without dead ends: 31404 [2022-03-03 17:04:43,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1773, Invalid=6968, Unknown=5, NotChecked=184, Total=8930 [2022-03-03 17:04:43,130 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 2683 mSDsluCounter, 8403 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 8627 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1162 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:43,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 8627 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2602 Invalid, 0 Unknown, 1162 Unchecked, 1.2s Time] [2022-03-03 17:04:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states. [2022-03-03 17:04:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 15099. [2022-03-03 17:04:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-03-03 17:04:43,522 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-03-03 17:04:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-03-03 17:04:43,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-03-03 17:04:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:43,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:43,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:43,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-03 17:04:43,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-03 17:04:43,749 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1101578668, now seen corresponding path program 8 times [2022-03-03 17:04:43,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:43,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091582441] [2022-03-03 17:04:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:44,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:44,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091582441] [2022-03-03 17:04:44,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091582441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:44,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:44,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:44,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61404356] [2022-03-03 17:04:44,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:44,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:44,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:44,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:44,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:44,183 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:44,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:44,875 INFO L93 Difference]: Finished difference Result 27477 states and 79051 transitions. [2022-03-03 17:04:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:44,875 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:44,939 INFO L225 Difference]: With dead ends: 27477 [2022-03-03 17:04:44,939 INFO L226 Difference]: Without dead ends: 27477 [2022-03-03 17:04:44,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:04:44,939 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1020 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:44,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3186 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27477 states. [2022-03-03 17:04:45,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27477 to 15115. [2022-03-03 17:04:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-03-03 17:04:45,394 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-03-03 17:04:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:45,394 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-03-03 17:04:45,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-03-03 17:04:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:45,420 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:45,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:45,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-03 17:04:45,421 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1666475066, now seen corresponding path program 5 times [2022-03-03 17:04:45,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:45,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728436294] [2022-03-03 17:04:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:45,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:45,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728436294] [2022-03-03 17:04:45,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728436294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:45,793 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:45,793 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:45,793 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164390733] [2022-03-03 17:04:45,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:45,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:45,793 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:45,794 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:46,449 INFO L93 Difference]: Finished difference Result 27233 states and 78373 transitions. [2022-03-03 17:04:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:46,513 INFO L225 Difference]: With dead ends: 27233 [2022-03-03 17:04:46,513 INFO L226 Difference]: Without dead ends: 27233 [2022-03-03 17:04:46,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:04:46,513 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 873 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:46,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2884 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27233 states. [2022-03-03 17:04:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27233 to 15123. [2022-03-03 17:04:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15123 states, 15122 states have (on average 2.880372966538818) internal successors, (43557), 15122 states have internal predecessors, (43557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15123 states to 15123 states and 43557 transitions. [2022-03-03 17:04:46,894 INFO L78 Accepts]: Start accepts. Automaton has 15123 states and 43557 transitions. Word has length 177 [2022-03-03 17:04:46,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:46,894 INFO L470 AbstractCegarLoop]: Abstraction has 15123 states and 43557 transitions. [2022-03-03 17:04:46,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 15123 states and 43557 transitions. [2022-03-03 17:04:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:46,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:46,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:46,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-03 17:04:46,920 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1868023956, now seen corresponding path program 10 times [2022-03-03 17:04:46,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:46,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053181863] [2022-03-03 17:04:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:47,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:47,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053181863] [2022-03-03 17:04:47,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053181863] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:47,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:47,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:47,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602567475] [2022-03-03 17:04:47,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:47,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:47,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:47,333 INFO L87 Difference]: Start difference. First operand 15123 states and 43557 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:48,052 INFO L93 Difference]: Finished difference Result 27005 states and 77715 transitions. [2022-03-03 17:04:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:48,053 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:48,115 INFO L225 Difference]: With dead ends: 27005 [2022-03-03 17:04:48,115 INFO L226 Difference]: Without dead ends: 27005 [2022-03-03 17:04:48,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:04:48,116 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1070 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:48,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3250 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27005 states. [2022-03-03 17:04:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27005 to 15115. [2022-03-03 17:04:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-03-03 17:04:48,456 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-03-03 17:04:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:48,456 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-03-03 17:04:48,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-03-03 17:04:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:48,480 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:48,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:48,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-03 17:04:48,481 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1963368598, now seen corresponding path program 8 times [2022-03-03 17:04:48,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:48,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365244554] [2022-03-03 17:04:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:48,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:48,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:48,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365244554] [2022-03-03 17:04:48,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365244554] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:48,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:48,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:48,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769177146] [2022-03-03 17:04:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:48,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:48,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:48,870 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:49,534 INFO L93 Difference]: Finished difference Result 26989 states and 77679 transitions. [2022-03-03 17:04:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:04:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:49,600 INFO L225 Difference]: With dead ends: 26989 [2022-03-03 17:04:49,600 INFO L226 Difference]: Without dead ends: 26989 [2022-03-03 17:04:49,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:04:49,601 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 972 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:49,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 3239 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26989 states. [2022-03-03 17:04:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26989 to 15107. [2022-03-03 17:04:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15107 states, 15106 states have (on average 2.8789222825367404) internal successors, (43489), 15106 states have internal predecessors, (43489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15107 states to 15107 states and 43489 transitions. [2022-03-03 17:04:50,031 INFO L78 Accepts]: Start accepts. Automaton has 15107 states and 43489 transitions. Word has length 177 [2022-03-03 17:04:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:50,031 INFO L470 AbstractCegarLoop]: Abstraction has 15107 states and 43489 transitions. [2022-03-03 17:04:50,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 15107 states and 43489 transitions. [2022-03-03 17:04:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:50,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:50,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:50,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-03 17:04:50,056 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1840144822, now seen corresponding path program 6 times [2022-03-03 17:04:50,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:50,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706947595] [2022-03-03 17:04:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:50,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:50,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706947595] [2022-03-03 17:04:50,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706947595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:50,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:50,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:04:50,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143246804] [2022-03-03 17:04:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:50,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:04:50,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:04:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:04:50,449 INFO L87 Difference]: Start difference. First operand 15107 states and 43489 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:51,198 INFO L93 Difference]: Finished difference Result 27625 states and 79443 transitions. [2022-03-03 17:04:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:04:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:51,260 INFO L225 Difference]: With dead ends: 27625 [2022-03-03 17:04:51,261 INFO L226 Difference]: Without dead ends: 27625 [2022-03-03 17:04:51,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:04:51,261 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 881 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:51,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 3164 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:04:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27625 states. [2022-03-03 17:04:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27625 to 15127. [2022-03-03 17:04:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 15126 states have (on average 2.878553484067169) internal successors, (43541), 15126 states have internal predecessors, (43541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 43541 transitions. [2022-03-03 17:04:51,619 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 43541 transitions. Word has length 177 [2022-03-03 17:04:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:51,619 INFO L470 AbstractCegarLoop]: Abstraction has 15127 states and 43541 transitions. [2022-03-03 17:04:51,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 43541 transitions. [2022-03-03 17:04:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:51,644 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:51,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:51,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-03 17:04:51,644 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1211952222, now seen corresponding path program 7 times [2022-03-03 17:04:51,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:51,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276775428] [2022-03-03 17:04:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:52,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:52,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276775428] [2022-03-03 17:04:52,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276775428] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:04:52,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989718560] [2022-03-03 17:04:52,018 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:04:52,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:04:52,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:04:52,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:04:52,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:04:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:52,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-03 17:04:52,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:04:52,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:04:52,319 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-03 17:04:52,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-03 17:04:52,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:04:52,721 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:04:52,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-03 17:04:52,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:04:52,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:04:53,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:04:53,330 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:04:53,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:04:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:04:53,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:04:53,709 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1115 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1115))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1))))) (= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-03 17:04:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:04:53,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989718560] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:04:53,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:04:53,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-03 17:04:53,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904438780] [2022-03-03 17:04:53,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:04:53,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 17:04:53,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:53,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 17:04:53,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2162, Unknown=1, NotChecked=94, Total=2450 [2022-03-03 17:04:53,830 INFO L87 Difference]: Start difference. First operand 15127 states and 43541 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:57,276 INFO L93 Difference]: Finished difference Result 33129 states and 95235 transitions. [2022-03-03 17:04:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:04:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:57,356 INFO L225 Difference]: With dead ends: 33129 [2022-03-03 17:04:57,356 INFO L226 Difference]: Without dead ends: 33129 [2022-03-03 17:04:57,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1765, Invalid=7358, Unknown=1, NotChecked=188, Total=9312 [2022-03-03 17:04:57,358 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 3787 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 8493 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1371 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:57,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3787 Valid, 8493 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2157 Invalid, 0 Unknown, 1371 Unchecked, 1.0s Time] [2022-03-03 17:04:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33129 states. [2022-03-03 17:04:57,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33129 to 15031. [2022-03-03 17:04:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-03-03 17:04:57,776 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-03-03 17:04:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:57,776 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-03-03 17:04:57,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-03-03 17:04:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:57,801 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:57,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:57,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:04:58,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-03 17:04:58,002 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1165193162, now seen corresponding path program 9 times [2022-03-03 17:04:58,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:58,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091382164] [2022-03-03 17:04:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:58,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:04:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:04:58,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:04:58,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091382164] [2022-03-03 17:04:58,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091382164] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:04:58,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:04:58,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:04:58,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221075724] [2022-03-03 17:04:58,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:04:58,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:04:58,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:04:58,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:04:58,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:04:58,422 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:04:59,229 INFO L93 Difference]: Finished difference Result 27887 states and 80315 transitions. [2022-03-03 17:04:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:04:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:04:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:04:59,294 INFO L225 Difference]: With dead ends: 27887 [2022-03-03 17:04:59,294 INFO L226 Difference]: Without dead ends: 27887 [2022-03-03 17:04:59,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:04:59,295 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1013 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:04:59,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 3657 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:04:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2022-03-03 17:04:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 15031. [2022-03-03 17:04:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-03-03 17:04:59,708 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-03-03 17:04:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:04:59,709 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-03-03 17:04:59,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:04:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-03-03 17:04:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:04:59,733 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:04:59,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:04:59,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-03 17:04:59,734 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:04:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:04:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 556348990, now seen corresponding path program 8 times [2022-03-03 17:04:59,734 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:04:59,734 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251537855] [2022-03-03 17:04:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:04:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:04:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:00,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:00,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251537855] [2022-03-03 17:05:00,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251537855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:00,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:00,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:00,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585918257] [2022-03-03 17:05:00,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:00,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:00,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:00,097 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:00,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:00,874 INFO L93 Difference]: Finished difference Result 27257 states and 78431 transitions. [2022-03-03 17:05:00,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:05:00,874 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:00,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:00,937 INFO L225 Difference]: With dead ends: 27257 [2022-03-03 17:05:00,937 INFO L226 Difference]: Without dead ends: 27257 [2022-03-03 17:05:00,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:05:00,938 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1068 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:00,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3346 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27257 states. [2022-03-03 17:05:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27257 to 15033. [2022-03-03 17:05:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15033 states, 15032 states have (on average 2.8792575838211816) internal successors, (43281), 15032 states have internal predecessors, (43281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15033 states to 15033 states and 43281 transitions. [2022-03-03 17:05:01,432 INFO L78 Accepts]: Start accepts. Automaton has 15033 states and 43281 transitions. Word has length 177 [2022-03-03 17:05:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:01,432 INFO L470 AbstractCegarLoop]: Abstraction has 15033 states and 43281 transitions. [2022-03-03 17:05:01,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 15033 states and 43281 transitions. [2022-03-03 17:05:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:01,457 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:01,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:01,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-03 17:05:01,458 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1799219242, now seen corresponding path program 9 times [2022-03-03 17:05:01,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:01,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447856948] [2022-03-03 17:05:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:01,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:01,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447856948] [2022-03-03 17:05:01,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447856948] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:05:01,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598262469] [2022-03-03 17:05:01,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:05:01,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:05:01,802 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:05:01,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:05:01,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:05:01,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:05:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 17:05:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:05:02,345 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:05:02,345 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:05:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:02,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:05:02,582 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-03 17:05:02,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-03-03 17:05:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:02,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598262469] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:05:02,729 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:05:02,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-03-03 17:05:02,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356001961] [2022-03-03 17:05:02,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:05:02,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:05:02,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:05:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:05:02,730 INFO L87 Difference]: Start difference. First operand 15033 states and 43281 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:05,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:05,176 INFO L93 Difference]: Finished difference Result 49915 states and 143127 transitions. [2022-03-03 17:05:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 17:05:05,176 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:05,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:05,309 INFO L225 Difference]: With dead ends: 49915 [2022-03-03 17:05:05,309 INFO L226 Difference]: Without dead ends: 49915 [2022-03-03 17:05:05,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 361 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1322, Invalid=5650, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:05:05,311 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2310 mSDsluCounter, 5784 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 911 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:05,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 6066 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1409 Invalid, 0 Unknown, 911 Unchecked, 0.6s Time] [2022-03-03 17:05:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49915 states. [2022-03-03 17:05:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49915 to 15149. [2022-03-03 17:05:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15149 states, 15148 states have (on average 2.8801822022709267) internal successors, (43629), 15148 states have internal predecessors, (43629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15149 states to 15149 states and 43629 transitions. [2022-03-03 17:05:05,913 INFO L78 Accepts]: Start accepts. Automaton has 15149 states and 43629 transitions. Word has length 177 [2022-03-03 17:05:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:05,913 INFO L470 AbstractCegarLoop]: Abstraction has 15149 states and 43629 transitions. [2022-03-03 17:05:05,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 15149 states and 43629 transitions. [2022-03-03 17:05:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:05,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:05,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:05,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-03 17:05:06,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-03 17:05:06,138 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:06,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash 673349404, now seen corresponding path program 10 times [2022-03-03 17:05:06,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:06,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205541666] [2022-03-03 17:05:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:06,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:06,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:06,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205541666] [2022-03-03 17:05:06,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205541666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:06,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:06,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:06,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917676022] [2022-03-03 17:05:06,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:06,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:06,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:06,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:06,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:06,542 INFO L87 Difference]: Start difference. First operand 15149 states and 43629 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:07,336 INFO L93 Difference]: Finished difference Result 27659 states and 79595 transitions. [2022-03-03 17:05:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:07,337 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:07,398 INFO L225 Difference]: With dead ends: 27659 [2022-03-03 17:05:07,398 INFO L226 Difference]: Without dead ends: 27659 [2022-03-03 17:05:07,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:05:07,398 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1082 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:07,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3788 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:07,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27659 states. [2022-03-03 17:05:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27659 to 15165. [2022-03-03 17:05:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 2.8810999736217355) internal successors, (43689), 15164 states have internal predecessors, (43689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 43689 transitions. [2022-03-03 17:05:07,963 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 43689 transitions. Word has length 177 [2022-03-03 17:05:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:07,963 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 43689 transitions. [2022-03-03 17:05:07,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 43689 transitions. [2022-03-03 17:05:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:07,988 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:07,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:07,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-03 17:05:07,988 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -853564158, now seen corresponding path program 10 times [2022-03-03 17:05:07,989 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:07,989 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833156830] [2022-03-03 17:05:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:08,357 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:08,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833156830] [2022-03-03 17:05:08,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833156830] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:08,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:08,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:08,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244314886] [2022-03-03 17:05:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:08,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:08,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:08,359 INFO L87 Difference]: Start difference. First operand 15165 states and 43689 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:09,235 INFO L93 Difference]: Finished difference Result 27399 states and 78865 transitions. [2022-03-03 17:05:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:09,236 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:09,296 INFO L225 Difference]: With dead ends: 27399 [2022-03-03 17:05:09,296 INFO L226 Difference]: Without dead ends: 27399 [2022-03-03 17:05:09,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:05:09,296 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1275 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:09,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 3080 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27399 states. [2022-03-03 17:05:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27399 to 15173. [2022-03-03 17:05:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15173 states, 15172 states have (on average 2.881030846295808) internal successors, (43711), 15172 states have internal predecessors, (43711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15173 states to 15173 states and 43711 transitions. [2022-03-03 17:05:09,643 INFO L78 Accepts]: Start accepts. Automaton has 15173 states and 43711 transitions. Word has length 177 [2022-03-03 17:05:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:09,644 INFO L470 AbstractCegarLoop]: Abstraction has 15173 states and 43711 transitions. [2022-03-03 17:05:09,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand 15173 states and 43711 transitions. [2022-03-03 17:05:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:09,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:09,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:09,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-03 17:05:09,668 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -652015268, now seen corresponding path program 11 times [2022-03-03 17:05:09,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:09,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319551752] [2022-03-03 17:05:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:10,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:10,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319551752] [2022-03-03 17:05:10,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319551752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:10,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:10,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:10,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631706698] [2022-03-03 17:05:10,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:10,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:10,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:10,053 INFO L87 Difference]: Start difference. First operand 15173 states and 43711 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:10,773 INFO L93 Difference]: Finished difference Result 27051 states and 77877 transitions. [2022-03-03 17:05:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:10,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:10,832 INFO L225 Difference]: With dead ends: 27051 [2022-03-03 17:05:10,833 INFO L226 Difference]: Without dead ends: 27051 [2022-03-03 17:05:10,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:05:10,833 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1068 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:10,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3144 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2022-03-03 17:05:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 15165. [2022-03-03 17:05:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 2.8810999736217355) internal successors, (43689), 15164 states have internal predecessors, (43689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 43689 transitions. [2022-03-03 17:05:11,178 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 43689 transitions. Word has length 177 [2022-03-03 17:05:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:11,178 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 43689 transitions. [2022-03-03 17:05:11,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 43689 transitions. [2022-03-03 17:05:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:11,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:11,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:11,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-03 17:05:11,202 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -188440526, now seen corresponding path program 9 times [2022-03-03 17:05:11,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:11,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132313387] [2022-03-03 17:05:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:11,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:11,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132313387] [2022-03-03 17:05:11,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132313387] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:11,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:11,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:11,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88828151] [2022-03-03 17:05:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:11,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:11,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:11,585 INFO L87 Difference]: Start difference. First operand 15165 states and 43689 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:12,227 INFO L93 Difference]: Finished difference Result 27163 states and 78201 transitions. [2022-03-03 17:05:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:12,286 INFO L225 Difference]: With dead ends: 27163 [2022-03-03 17:05:12,287 INFO L226 Difference]: Without dead ends: 27163 [2022-03-03 17:05:12,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:05:12,287 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1172 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:12,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 2370 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27163 states. [2022-03-03 17:05:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27163 to 15147. [2022-03-03 17:05:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15146 states have (on average 2.8801663805625246) internal successors, (43623), 15146 states have internal predecessors, (43623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 43623 transitions. [2022-03-03 17:05:12,643 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 43623 transitions. Word has length 177 [2022-03-03 17:05:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:12,643 INFO L470 AbstractCegarLoop]: Abstraction has 15147 states and 43623 transitions. [2022-03-03 17:05:12,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 43623 transitions. [2022-03-03 17:05:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:12,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:12,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:12,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-03 17:05:12,668 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1002571828, now seen corresponding path program 11 times [2022-03-03 17:05:12,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:12,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325635769] [2022-03-03 17:05:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:12,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:13,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:13,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325635769] [2022-03-03 17:05:13,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325635769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:13,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:13,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:13,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520311999] [2022-03-03 17:05:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:13,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:13,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:13,052 INFO L87 Difference]: Start difference. First operand 15147 states and 43623 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:13,748 INFO L93 Difference]: Finished difference Result 27559 states and 79273 transitions. [2022-03-03 17:05:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:05:13,749 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:13,813 INFO L225 Difference]: With dead ends: 27559 [2022-03-03 17:05:13,813 INFO L226 Difference]: Without dead ends: 27559 [2022-03-03 17:05:13,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:05:13,813 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1295 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:13,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 2657 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27559 states. [2022-03-03 17:05:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27559 to 15147. [2022-03-03 17:05:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15146 states have (on average 2.8796381883005413) internal successors, (43615), 15146 states have internal predecessors, (43615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 43615 transitions. [2022-03-03 17:05:14,161 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 43615 transitions. Word has length 177 [2022-03-03 17:05:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:14,161 INFO L470 AbstractCegarLoop]: Abstraction has 15147 states and 43615 transitions. [2022-03-03 17:05:14,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 43615 transitions. [2022-03-03 17:05:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:14,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:14,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:14,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-03 17:05:14,186 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1765481906, now seen corresponding path program 11 times [2022-03-03 17:05:14,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:14,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827992781] [2022-03-03 17:05:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:14,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:14,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:14,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827992781] [2022-03-03 17:05:14,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827992781] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:14,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:14,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:14,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619135873] [2022-03-03 17:05:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:14,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:14,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:14,561 INFO L87 Difference]: Start difference. First operand 15147 states and 43615 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:15,235 INFO L93 Difference]: Finished difference Result 26935 states and 77239 transitions. [2022-03-03 17:05:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:05:15,239 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:15,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:15,299 INFO L225 Difference]: With dead ends: 26935 [2022-03-03 17:05:15,299 INFO L226 Difference]: Without dead ends: 26935 [2022-03-03 17:05:15,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:05:15,300 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1274 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:15,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 2821 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:15,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26935 states. [2022-03-03 17:05:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26935 to 14779. [2022-03-03 17:05:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.861753958587089) internal successors, (42291), 14778 states have internal predecessors, (42291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42291 transitions. [2022-03-03 17:05:15,643 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42291 transitions. Word has length 177 [2022-03-03 17:05:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:15,643 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42291 transitions. [2022-03-03 17:05:15,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42291 transitions. [2022-03-03 17:05:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:15,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:15,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:15,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-03 17:05:15,668 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1967030796, now seen corresponding path program 12 times [2022-03-03 17:05:15,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:15,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117557442] [2022-03-03 17:05:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:15,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:16,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:16,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117557442] [2022-03-03 17:05:16,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117557442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:16,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:16,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:16,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013598621] [2022-03-03 17:05:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:16,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:16,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:16,046 INFO L87 Difference]: Start difference. First operand 14779 states and 42291 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:16,737 INFO L93 Difference]: Finished difference Result 26603 states and 76295 transitions. [2022-03-03 17:05:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:16,798 INFO L225 Difference]: With dead ends: 26603 [2022-03-03 17:05:16,798 INFO L226 Difference]: Without dead ends: 26603 [2022-03-03 17:05:16,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:05:16,798 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1068 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:16,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3132 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26603 states. [2022-03-03 17:05:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26603 to 14779. [2022-03-03 17:05:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.861753958587089) internal successors, (42291), 14778 states have internal predecessors, (42291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42291 transitions. [2022-03-03 17:05:17,161 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42291 transitions. Word has length 177 [2022-03-03 17:05:17,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:17,161 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42291 transitions. [2022-03-03 17:05:17,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42291 transitions. [2022-03-03 17:05:17,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:17,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:17,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:17,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-03 17:05:17,187 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1864361758, now seen corresponding path program 10 times [2022-03-03 17:05:17,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:17,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217188766] [2022-03-03 17:05:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:17,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:17,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217188766] [2022-03-03 17:05:17,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217188766] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:17,590 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:17,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:17,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131518885] [2022-03-03 17:05:17,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:17,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:17,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:17,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:17,591 INFO L87 Difference]: Start difference. First operand 14779 states and 42291 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:18,372 INFO L93 Difference]: Finished difference Result 26723 states and 76641 transitions. [2022-03-03 17:05:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:18,436 INFO L225 Difference]: With dead ends: 26723 [2022-03-03 17:05:18,437 INFO L226 Difference]: Without dead ends: 26723 [2022-03-03 17:05:18,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:05:18,437 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 1084 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:18,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3767 Invalid, 1038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26723 states. [2022-03-03 17:05:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26723 to 14771. [2022-03-03 17:05:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14771 states, 14770 states have (on average 2.860731211916046) internal successors, (42253), 14770 states have internal predecessors, (42253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14771 states to 14771 states and 42253 transitions. [2022-03-03 17:05:18,793 INFO L78 Accepts]: Start accepts. Automaton has 14771 states and 42253 transitions. Word has length 177 [2022-03-03 17:05:18,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:18,793 INFO L470 AbstractCegarLoop]: Abstraction has 14771 states and 42253 transitions. [2022-03-03 17:05:18,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 14771 states and 42253 transitions. [2022-03-03 17:05:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:18,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:18,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:18,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-03 17:05:18,818 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 332351942, now seen corresponding path program 13 times [2022-03-03 17:05:18,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:18,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921691098] [2022-03-03 17:05:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:18,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:19,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:19,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921691098] [2022-03-03 17:05:19,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921691098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:19,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:19,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:19,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060905090] [2022-03-03 17:05:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:19,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:19,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:19,226 INFO L87 Difference]: Start difference. First operand 14771 states and 42253 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:20,049 INFO L93 Difference]: Finished difference Result 25753 states and 73603 transitions. [2022-03-03 17:05:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:05:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:20,104 INFO L225 Difference]: With dead ends: 25753 [2022-03-03 17:05:20,104 INFO L226 Difference]: Without dead ends: 25753 [2022-03-03 17:05:20,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:05:20,105 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1305 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:20,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 4115 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25753 states. [2022-03-03 17:05:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25753 to 13913. [2022-03-03 17:05:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13913 states, 13912 states have (on average 2.850848188614146) internal successors, (39661), 13912 states have internal predecessors, (39661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13913 states to 13913 states and 39661 transitions. [2022-03-03 17:05:20,423 INFO L78 Accepts]: Start accepts. Automaton has 13913 states and 39661 transitions. Word has length 177 [2022-03-03 17:05:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:20,423 INFO L470 AbstractCegarLoop]: Abstraction has 13913 states and 39661 transitions. [2022-03-03 17:05:20,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13913 states and 39661 transitions. [2022-03-03 17:05:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:20,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:20,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:20,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-03 17:05:20,445 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 627234334, now seen corresponding path program 11 times [2022-03-03 17:05:20,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:20,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111515757] [2022-03-03 17:05:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:20,808 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:20,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111515757] [2022-03-03 17:05:20,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111515757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:20,809 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:20,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:20,809 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606719604] [2022-03-03 17:05:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:20,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:20,809 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:20,810 INFO L87 Difference]: Start difference. First operand 13913 states and 39661 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:21,564 INFO L93 Difference]: Finished difference Result 25473 states and 72801 transitions. [2022-03-03 17:05:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:05:21,564 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:21,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:21,631 INFO L225 Difference]: With dead ends: 25473 [2022-03-03 17:05:21,632 INFO L226 Difference]: Without dead ends: 25473 [2022-03-03 17:05:21,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:05:21,632 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1080 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:21,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 3239 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25473 states. [2022-03-03 17:05:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25473 to 13929. [2022-03-03 17:05:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13929 states, 13928 states have (on average 2.850732337736933) internal successors, (39705), 13928 states have internal predecessors, (39705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 39705 transitions. [2022-03-03 17:05:21,961 INFO L78 Accepts]: Start accepts. Automaton has 13929 states and 39705 transitions. Word has length 177 [2022-03-03 17:05:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:21,962 INFO L470 AbstractCegarLoop]: Abstraction has 13929 states and 39705 transitions. [2022-03-03 17:05:21,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:21,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13929 states and 39705 transitions. [2022-03-03 17:05:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:21,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:21,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:21,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-03 17:05:21,984 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1467129088, now seen corresponding path program 12 times [2022-03-03 17:05:21,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:21,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667389485] [2022-03-03 17:05:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:22,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:22,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667389485] [2022-03-03 17:05:22,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667389485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:22,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:22,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:22,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324922411] [2022-03-03 17:05:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:22,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:22,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:22,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:22,455 INFO L87 Difference]: Start difference. First operand 13929 states and 39705 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:23,176 INFO L93 Difference]: Finished difference Result 26337 states and 75273 transitions. [2022-03-03 17:05:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:05:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:23,240 INFO L225 Difference]: With dead ends: 26337 [2022-03-03 17:05:23,241 INFO L226 Difference]: Without dead ends: 26337 [2022-03-03 17:05:23,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:05:23,241 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1292 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:23,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 2703 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26337 states. [2022-03-03 17:05:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26337 to 13887. [2022-03-03 17:05:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13887 states, 13886 states have (on average 2.850568918335014) internal successors, (39583), 13886 states have internal predecessors, (39583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13887 states to 13887 states and 39583 transitions. [2022-03-03 17:05:23,561 INFO L78 Accepts]: Start accepts. Automaton has 13887 states and 39583 transitions. Word has length 177 [2022-03-03 17:05:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:23,561 INFO L470 AbstractCegarLoop]: Abstraction has 13887 states and 39583 transitions. [2022-03-03 17:05:23,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13887 states and 39583 transitions. [2022-03-03 17:05:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:23,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:23,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:23,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-03 17:05:23,583 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:23,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash -850243970, now seen corresponding path program 12 times [2022-03-03 17:05:23,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:23,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420130121] [2022-03-03 17:05:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:23,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:23,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420130121] [2022-03-03 17:05:23,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420130121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:05:23,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073812633] [2022-03-03 17:05:23,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:05:23,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:05:23,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:05:23,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:05:24,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:05:24,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:05:24,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 17:05:24,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:05:24,503 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:05:24,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:05:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:24,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:05:24,739 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-03 17:05:24,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-03-03 17:05:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:24,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073812633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:05:24,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:05:24,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 9] total 35 [2022-03-03 17:05:24,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621301208] [2022-03-03 17:05:24,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:05:24,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-03 17:05:24,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-03 17:05:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:05:24,911 INFO L87 Difference]: Start difference. First operand 13887 states and 39583 transitions. Second operand has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:25,991 INFO L93 Difference]: Finished difference Result 27255 states and 77861 transitions. [2022-03-03 17:05:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:05:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:26,050 INFO L225 Difference]: With dead ends: 27255 [2022-03-03 17:05:26,051 INFO L226 Difference]: Without dead ends: 27255 [2022-03-03 17:05:26,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 17:05:26,051 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1585 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:26,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 5722 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1114 Invalid, 0 Unknown, 302 Unchecked, 0.4s Time] [2022-03-03 17:05:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27255 states. [2022-03-03 17:05:26,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27255 to 13881. [2022-03-03 17:05:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13881 states, 13880 states have (on average 2.8505043227665707) internal successors, (39565), 13880 states have internal predecessors, (39565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 39565 transitions. [2022-03-03 17:05:26,383 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 39565 transitions. Word has length 177 [2022-03-03 17:05:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:26,383 INFO L470 AbstractCegarLoop]: Abstraction has 13881 states and 39565 transitions. [2022-03-03 17:05:26,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:26,383 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 39565 transitions. [2022-03-03 17:05:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:26,405 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:26,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:26,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-03 17:05:26,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-03 17:05:26,606 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash -437921898, now seen corresponding path program 13 times [2022-03-03 17:05:26,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:26,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809973529] [2022-03-03 17:05:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:26,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:27,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:27,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809973529] [2022-03-03 17:05:27,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809973529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:05:27,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374326035] [2022-03-03 17:05:27,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:05:27,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:05:27,039 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:05:27,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:05:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:27,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-03 17:05:27,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:05:27,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:27,333 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-03 17:05:27,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-03 17:05:27,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:05:27,707 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:05:27,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-03 17:05:27,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:27,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:28,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:28,343 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:05:28,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:05:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:05:28,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:05:28,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1426 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1426))) (let ((.cse0 (select .cse3 c_~get1~0.base)) (.cse2 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse0 c_~get1~0.offset) (select .cse2 c_~get2~0.offset)))))) is different from false [2022-03-03 17:05:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:05:28,886 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374326035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:05:28,886 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:05:28,886 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-03 17:05:28,886 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152106904] [2022-03-03 17:05:28,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:05:28,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 17:05:28,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 17:05:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2149, Unknown=1, NotChecked=94, Total=2450 [2022-03-03 17:05:28,888 INFO L87 Difference]: Start difference. First operand 13881 states and 39565 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:32,182 INFO L93 Difference]: Finished difference Result 27224 states and 77936 transitions. [2022-03-03 17:05:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 17:05:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:32,237 INFO L225 Difference]: With dead ends: 27224 [2022-03-03 17:05:32,237 INFO L226 Difference]: Without dead ends: 27224 [2022-03-03 17:05:32,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1673, Invalid=7072, Unknown=1, NotChecked=184, Total=8930 [2022-03-03 17:05:32,238 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 3076 mSDsluCounter, 7495 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 7713 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1486 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:32,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3076 Valid, 7713 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2212 Invalid, 0 Unknown, 1486 Unchecked, 0.9s Time] [2022-03-03 17:05:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27224 states. [2022-03-03 17:05:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27224 to 13145. [2022-03-03 17:05:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13145 states, 13144 states have (on average 2.8651095556908093) internal successors, (37659), 13144 states have internal predecessors, (37659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 37659 transitions. [2022-03-03 17:05:32,571 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 37659 transitions. Word has length 177 [2022-03-03 17:05:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:32,571 INFO L470 AbstractCegarLoop]: Abstraction has 13145 states and 37659 transitions. [2022-03-03 17:05:32,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 37659 transitions. [2022-03-03 17:05:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:32,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:32,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:32,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:05:32,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:32,794 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash -190982338, now seen corresponding path program 12 times [2022-03-03 17:05:32,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:32,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640069399] [2022-03-03 17:05:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:33,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:33,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640069399] [2022-03-03 17:05:33,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640069399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:33,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:33,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:33,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933802808] [2022-03-03 17:05:33,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:33,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:33,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:33,104 INFO L87 Difference]: Start difference. First operand 13145 states and 37659 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:33,867 INFO L93 Difference]: Finished difference Result 28662 states and 82319 transitions. [2022-03-03 17:05:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:05:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:33,930 INFO L225 Difference]: With dead ends: 28662 [2022-03-03 17:05:33,930 INFO L226 Difference]: Without dead ends: 28662 [2022-03-03 17:05:33,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:05:33,931 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1028 mSDsluCounter, 4257 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:33,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 4580 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28662 states. [2022-03-03 17:05:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28662 to 13657. [2022-03-03 17:05:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13657 states, 13656 states have (on average 2.8615260691271236) internal successors, (39077), 13656 states have internal predecessors, (39077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13657 states to 13657 states and 39077 transitions. [2022-03-03 17:05:34,275 INFO L78 Accepts]: Start accepts. Automaton has 13657 states and 39077 transitions. Word has length 177 [2022-03-03 17:05:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:34,276 INFO L470 AbstractCegarLoop]: Abstraction has 13657 states and 39077 transitions. [2022-03-03 17:05:34,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13657 states and 39077 transitions. [2022-03-03 17:05:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:34,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:34,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:34,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-03 17:05:34,298 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1068165586, now seen corresponding path program 14 times [2022-03-03 17:05:34,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:34,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184008190] [2022-03-03 17:05:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:34,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:34,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184008190] [2022-03-03 17:05:34,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184008190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:34,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:34,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:34,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215859700] [2022-03-03 17:05:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:34,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:34,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:34,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:34,647 INFO L87 Difference]: Start difference. First operand 13657 states and 39077 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:35,426 INFO L93 Difference]: Finished difference Result 22774 states and 65512 transitions. [2022-03-03 17:05:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:35,474 INFO L225 Difference]: With dead ends: 22774 [2022-03-03 17:05:35,474 INFO L226 Difference]: Without dead ends: 22774 [2022-03-03 17:05:35,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:05:35,475 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1048 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3838 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:35,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 3838 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-03-03 17:05:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 13857. [2022-03-03 17:05:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 13856 states have (on average 2.859483256351039) internal successors, (39621), 13856 states have internal predecessors, (39621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 39621 transitions. [2022-03-03 17:05:35,822 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 39621 transitions. Word has length 177 [2022-03-03 17:05:35,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:35,822 INFO L470 AbstractCegarLoop]: Abstraction has 13857 states and 39621 transitions. [2022-03-03 17:05:35,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 39621 transitions. [2022-03-03 17:05:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:35,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:35,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:35,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-03 17:05:35,844 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 264718334, now seen corresponding path program 15 times [2022-03-03 17:05:35,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:35,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452564261] [2022-03-03 17:05:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:36,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:36,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452564261] [2022-03-03 17:05:36,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452564261] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:05:36,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302046750] [2022-03-03 17:05:36,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:05:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:05:36,157 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:05:36,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:05:36,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:05:36,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:05:36,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-03 17:05:36,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:05:36,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:36,331 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:05:36,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:05:36,459 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-03 17:05:36,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-03 17:05:36,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:05:36,894 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-03 17:05:36,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-03 17:05:37,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:37,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:37,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:37,654 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:05:37,655 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-03 17:05:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:05:37,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:05:38,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1498))) (let ((.cse1 (select .cse3 ~get2~0.base)) (.cse0 (select .cse3 c_~get1~0.base))) (or (<= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2)))))))) is different from false [2022-03-03 17:05:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:05:38,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302046750] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:05:38,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:05:38,318 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-03 17:05:38,318 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695464412] [2022-03-03 17:05:38,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:05:38,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-03 17:05:38,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-03 17:05:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-03-03 17:05:38,320 INFO L87 Difference]: Start difference. First operand 13857 states and 39621 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:42,698 INFO L93 Difference]: Finished difference Result 34988 states and 100937 transitions. [2022-03-03 17:05:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 17:05:42,698 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:42,771 INFO L225 Difference]: With dead ends: 34988 [2022-03-03 17:05:42,771 INFO L226 Difference]: Without dead ends: 34988 [2022-03-03 17:05:42,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2031, Invalid=9528, Unknown=1, NotChecked=212, Total=11772 [2022-03-03 17:05:42,773 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 3811 mSDsluCounter, 13606 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3811 SdHoareTripleChecker+Valid, 13847 SdHoareTripleChecker+Invalid, 5279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1606 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:42,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3811 Valid, 13847 Invalid, 5279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3611 Invalid, 0 Unknown, 1606 Unchecked, 1.5s Time] [2022-03-03 17:05:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34988 states. [2022-03-03 17:05:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34988 to 16569. [2022-03-03 17:05:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16569 states, 16568 states have (on average 2.8684814099468854) internal successors, (47525), 16568 states have internal predecessors, (47525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16569 states to 16569 states and 47525 transitions. [2022-03-03 17:05:43,240 INFO L78 Accepts]: Start accepts. Automaton has 16569 states and 47525 transitions. Word has length 177 [2022-03-03 17:05:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:43,240 INFO L470 AbstractCegarLoop]: Abstraction has 16569 states and 47525 transitions. [2022-03-03 17:05:43,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 16569 states and 47525 transitions. [2022-03-03 17:05:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:43,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:43,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:43,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:05:43,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:43,465 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1010134096, now seen corresponding path program 14 times [2022-03-03 17:05:43,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:43,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422063907] [2022-03-03 17:05:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:43,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:43,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422063907] [2022-03-03 17:05:43,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422063907] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:05:43,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192396927] [2022-03-03 17:05:43,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:05:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:05:43,775 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:05:43,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:05:43,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:05:43,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:05:43,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 17:05:43,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:05:44,292 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:05:44,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:05:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:44,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:05:44,558 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-03 17:05:44,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-03 17:05:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:44,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192396927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:05:44,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:05:44,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 30 [2022-03-03 17:05:44,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623232832] [2022-03-03 17:05:44,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:05:44,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:05:44,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:05:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:05:44,706 INFO L87 Difference]: Start difference. First operand 16569 states and 47525 transitions. Second operand has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:46,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:46,048 INFO L93 Difference]: Finished difference Result 35449 states and 102230 transitions. [2022-03-03 17:05:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 17:05:46,049 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:46,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:46,116 INFO L225 Difference]: With dead ends: 35449 [2022-03-03 17:05:46,116 INFO L226 Difference]: Without dead ends: 35449 [2022-03-03 17:05:46,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=783, Invalid=2999, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:05:46,117 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1938 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:46,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 7164 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1558 Invalid, 0 Unknown, 290 Unchecked, 0.6s Time] [2022-03-03 17:05:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35449 states. [2022-03-03 17:05:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35449 to 17289. [2022-03-03 17:05:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17289 states, 17288 states have (on average 2.8649352151781584) internal successors, (49529), 17288 states have internal predecessors, (49529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17289 states to 17289 states and 49529 transitions. [2022-03-03 17:05:46,497 INFO L78 Accepts]: Start accepts. Automaton has 17289 states and 49529 transitions. Word has length 177 [2022-03-03 17:05:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:46,497 INFO L470 AbstractCegarLoop]: Abstraction has 17289 states and 49529 transitions. [2022-03-03 17:05:46,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17289 states and 49529 transitions. [2022-03-03 17:05:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:46,522 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:46,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:46,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 17:05:46,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:46,723 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:46,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash -219886214, now seen corresponding path program 13 times [2022-03-03 17:05:46,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:46,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949486290] [2022-03-03 17:05:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:47,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:47,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949486290] [2022-03-03 17:05:47,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949486290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:47,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:47,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:47,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940376942] [2022-03-03 17:05:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:47,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:47,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:47,094 INFO L87 Difference]: Start difference. First operand 17289 states and 49529 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:47,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:47,987 INFO L93 Difference]: Finished difference Result 30015 states and 86391 transitions. [2022-03-03 17:05:47,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:05:47,987 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:48,044 INFO L225 Difference]: With dead ends: 30015 [2022-03-03 17:05:48,044 INFO L226 Difference]: Without dead ends: 30015 [2022-03-03 17:05:48,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:05:48,045 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1046 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:48,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 4578 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:05:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30015 states. [2022-03-03 17:05:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30015 to 17305. [2022-03-03 17:05:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-03 17:05:48,493 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-03 17:05:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:48,493 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-03 17:05:48,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-03 17:05:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:48,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:48,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:48,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-03 17:05:48,519 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 652336600, now seen corresponding path program 14 times [2022-03-03 17:05:48,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:48,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076245225] [2022-03-03 17:05:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:48,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:48,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076245225] [2022-03-03 17:05:48,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076245225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:48,893 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:48,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:48,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232558496] [2022-03-03 17:05:48,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:48,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:48,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:48,894 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:49,628 INFO L93 Difference]: Finished difference Result 26780 states and 77304 transitions. [2022-03-03 17:05:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:49,683 INFO L225 Difference]: With dead ends: 26780 [2022-03-03 17:05:49,683 INFO L226 Difference]: Without dead ends: 26780 [2022-03-03 17:05:49,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:05:49,683 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1057 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:49,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 3581 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2022-03-03 17:05:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 17313. [2022-03-03 17:05:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 2.866162199630314) internal successors, (49619), 17312 states have internal predecessors, (49619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 49619 transitions. [2022-03-03 17:05:50,033 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 49619 transitions. Word has length 177 [2022-03-03 17:05:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:50,033 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 49619 transitions. [2022-03-03 17:05:50,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 49619 transitions. [2022-03-03 17:05:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:50,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:50,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:50,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-03 17:05:50,058 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1447008256, now seen corresponding path program 16 times [2022-03-03 17:05:50,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:50,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104248419] [2022-03-03 17:05:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:50,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:50,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:50,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104248419] [2022-03-03 17:05:50,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104248419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:50,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:50,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:50,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802723525] [2022-03-03 17:05:50,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:50,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:50,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:50,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:50,423 INFO L87 Difference]: Start difference. First operand 17313 states and 49619 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:51,134 INFO L93 Difference]: Finished difference Result 26444 states and 76272 transitions. [2022-03-03 17:05:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:05:51,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:51,197 INFO L225 Difference]: With dead ends: 26444 [2022-03-03 17:05:51,197 INFO L226 Difference]: Without dead ends: 26444 [2022-03-03 17:05:51,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:05:51,197 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 987 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:51,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 3148 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:05:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26444 states. [2022-03-03 17:05:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26444 to 17345. [2022-03-03 17:05:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17345 states, 17344 states have (on average 2.8659478782287824) internal successors, (49707), 17344 states have internal predecessors, (49707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 49707 transitions. [2022-03-03 17:05:51,542 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 49707 transitions. Word has length 177 [2022-03-03 17:05:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:51,542 INFO L470 AbstractCegarLoop]: Abstraction has 17345 states and 49707 transitions. [2022-03-03 17:05:51,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 49707 transitions. [2022-03-03 17:05:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:51,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:51,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:51,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-03 17:05:51,568 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1040334356, now seen corresponding path program 17 times [2022-03-03 17:05:51,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:51,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641909593] [2022-03-03 17:05:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:51,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:51,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641909593] [2022-03-03 17:05:51,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641909593] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:05:51,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272350418] [2022-03-03 17:05:51,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:05:51,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:05:51,910 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:05:51,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:05:52,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:05:52,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:05:52,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-03 17:05:52,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:05:52,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:05:52,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:52,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:05:53,132 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:05:53,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:05:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:05:53,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:05:53,442 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1614 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1614))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-03 17:05:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:05:53,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272350418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:05:53,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:05:53,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 47 [2022-03-03 17:05:53,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44244331] [2022-03-03 17:05:53,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:05:53,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 17:05:53,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 17:05:53,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1869, Unknown=1, NotChecked=88, Total=2162 [2022-03-03 17:05:53,554 INFO L87 Difference]: Start difference. First operand 17345 states and 49707 transitions. Second operand has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:56,625 INFO L93 Difference]: Finished difference Result 30265 states and 87287 transitions. [2022-03-03 17:05:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 17:05:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:56,688 INFO L225 Difference]: With dead ends: 30265 [2022-03-03 17:05:56,688 INFO L226 Difference]: Without dead ends: 30265 [2022-03-03 17:05:56,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1852, Invalid=7081, Unknown=1, NotChecked=186, Total=9120 [2022-03-03 17:05:56,689 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 2908 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 893 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:56,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2908 Valid, 5723 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1963 Invalid, 0 Unknown, 893 Unchecked, 0.8s Time] [2022-03-03 17:05:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30265 states. [2022-03-03 17:05:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30265 to 17327. [2022-03-03 17:05:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17327 states, 17326 states have (on average 2.865808611335565) internal successors, (49653), 17326 states have internal predecessors, (49653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17327 states to 17327 states and 49653 transitions. [2022-03-03 17:05:57,068 INFO L78 Accepts]: Start accepts. Automaton has 17327 states and 49653 transitions. Word has length 177 [2022-03-03 17:05:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:57,068 INFO L470 AbstractCegarLoop]: Abstraction has 17327 states and 49653 transitions. [2022-03-03 17:05:57,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 17327 states and 49653 transitions. [2022-03-03 17:05:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:57,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:57,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:57,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-03 17:05:57,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:05:57,295 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1804088130, now seen corresponding path program 15 times [2022-03-03 17:05:57,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:57,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343781797] [2022-03-03 17:05:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:57,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:57,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343781797] [2022-03-03 17:05:57,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343781797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:57,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:57,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:05:57,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843872788] [2022-03-03 17:05:57,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:57,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:05:57,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:05:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:05:57,722 INFO L87 Difference]: Start difference. First operand 17327 states and 49653 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:58,310 INFO L93 Difference]: Finished difference Result 26344 states and 75932 transitions. [2022-03-03 17:05:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 17:05:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:58,366 INFO L225 Difference]: With dead ends: 26344 [2022-03-03 17:05:58,366 INFO L226 Difference]: Without dead ends: 26344 [2022-03-03 17:05:58,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:05:58,366 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 974 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:58,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 2748 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26344 states. [2022-03-03 17:05:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26344 to 17343. [2022-03-03 17:05:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 2.8666243801176337) internal successors, (49713), 17342 states have internal predecessors, (49713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 49713 transitions. [2022-03-03 17:05:58,711 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 49713 transitions. Word has length 177 [2022-03-03 17:05:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:05:58,711 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 49713 transitions. [2022-03-03 17:05:58,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 49713 transitions. [2022-03-03 17:05:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:05:58,737 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:05:58,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:05:58,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-03 17:05:58,737 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:05:58,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:05:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1438045892, now seen corresponding path program 18 times [2022-03-03 17:05:58,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:05:58,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340615726] [2022-03-03 17:05:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:05:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:05:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:05:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:05:59,135 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:05:59,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340615726] [2022-03-03 17:05:59,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340615726] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:05:59,135 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:05:59,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:05:59,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885074610] [2022-03-03 17:05:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:05:59,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:05:59,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:05:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:05:59,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:05:59,136 INFO L87 Difference]: Start difference. First operand 17343 states and 49713 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:05:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:05:59,758 INFO L93 Difference]: Finished difference Result 26188 states and 75512 transitions. [2022-03-03 17:05:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 17:05:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:05:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:05:59,812 INFO L225 Difference]: With dead ends: 26188 [2022-03-03 17:05:59,813 INFO L226 Difference]: Without dead ends: 26188 [2022-03-03 17:05:59,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:05:59,813 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 823 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:05:59,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 3200 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:05:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2022-03-03 17:06:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 17351. [2022-03-03 17:06:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17351 states, 17350 states have (on average 2.86657060518732) internal successors, (49735), 17350 states have internal predecessors, (49735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 49735 transitions. [2022-03-03 17:06:00,144 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 49735 transitions. Word has length 177 [2022-03-03 17:06:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:00,144 INFO L470 AbstractCegarLoop]: Abstraction has 17351 states and 49735 transitions. [2022-03-03 17:06:00,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 49735 transitions. [2022-03-03 17:06:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:00,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:00,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:00,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-03 17:06:00,170 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1165514494, now seen corresponding path program 19 times [2022-03-03 17:06:00,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:00,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94606703] [2022-03-03 17:06:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:00,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:00,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94606703] [2022-03-03 17:06:00,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94606703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:00,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:00,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:00,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991689003] [2022-03-03 17:06:00,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:00,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:00,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:00,516 INFO L87 Difference]: Start difference. First operand 17351 states and 49735 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:01,218 INFO L93 Difference]: Finished difference Result 25888 states and 74536 transitions. [2022-03-03 17:06:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:06:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:01,272 INFO L225 Difference]: With dead ends: 25888 [2022-03-03 17:06:01,272 INFO L226 Difference]: Without dead ends: 25888 [2022-03-03 17:06:01,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:06:01,273 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 1123 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:01,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3143 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:06:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25888 states. [2022-03-03 17:06:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25888 to 17343. [2022-03-03 17:06:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 2.8666243801176337) internal successors, (49713), 17342 states have internal predecessors, (49713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 49713 transitions. [2022-03-03 17:06:01,609 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 49713 transitions. Word has length 177 [2022-03-03 17:06:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:01,609 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 49713 transitions. [2022-03-03 17:06:01,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 49713 transitions. [2022-03-03 17:06:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:01,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:01,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:01,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-03 17:06:01,637 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:01,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1629089236, now seen corresponding path program 13 times [2022-03-03 17:06:01,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:01,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762546622] [2022-03-03 17:06:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:01,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:01,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762546622] [2022-03-03 17:06:01,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762546622] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:01,983 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:01,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:01,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652154060] [2022-03-03 17:06:01,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:01,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:01,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:01,984 INFO L87 Difference]: Start difference. First operand 17343 states and 49713 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:02,631 INFO L93 Difference]: Finished difference Result 25944 states and 74674 transitions. [2022-03-03 17:06:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:06:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:02,686 INFO L225 Difference]: With dead ends: 25944 [2022-03-03 17:06:02,686 INFO L226 Difference]: Without dead ends: 25944 [2022-03-03 17:06:02,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:06:02,687 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1160 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:02,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 2748 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:06:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25944 states. [2022-03-03 17:06:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25944 to 17357. [2022-03-03 17:06:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 17356 states have (on average 2.8655796266420834) internal successors, (49735), 17356 states have internal predecessors, (49735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 49735 transitions. [2022-03-03 17:06:03,161 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 49735 transitions. Word has length 177 [2022-03-03 17:06:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:03,161 INFO L470 AbstractCegarLoop]: Abstraction has 17357 states and 49735 transitions. [2022-03-03 17:06:03,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 49735 transitions. [2022-03-03 17:06:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:03,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:03,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:03,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-03 17:06:03,187 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1611715648, now seen corresponding path program 20 times [2022-03-03 17:06:03,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:03,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495017363] [2022-03-03 17:06:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:03,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:03,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:03,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495017363] [2022-03-03 17:06:03,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495017363] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:03,517 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:03,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:03,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816373573] [2022-03-03 17:06:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:03,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:03,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:03,518 INFO L87 Difference]: Start difference. First operand 17357 states and 49735 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:04,271 INFO L93 Difference]: Finished difference Result 26310 states and 75678 transitions. [2022-03-03 17:06:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:06:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:04,325 INFO L225 Difference]: With dead ends: 26310 [2022-03-03 17:06:04,326 INFO L226 Difference]: Without dead ends: 26310 [2022-03-03 17:06:04,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:06:04,326 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 946 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:04,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3370 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26310 states. [2022-03-03 17:06:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26310 to 17413. [2022-03-03 17:06:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17413 states, 17412 states have (on average 2.865552492533885) internal successors, (49895), 17412 states have internal predecessors, (49895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 49895 transitions. [2022-03-03 17:06:04,664 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 49895 transitions. Word has length 177 [2022-03-03 17:06:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:04,664 INFO L470 AbstractCegarLoop]: Abstraction has 17413 states and 49895 transitions. [2022-03-03 17:06:04,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 49895 transitions. [2022-03-03 17:06:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:04,689 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:04,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:04,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-03 17:06:04,689 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2018389548, now seen corresponding path program 21 times [2022-03-03 17:06:04,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:04,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181393674] [2022-03-03 17:06:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:05,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:05,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181393674] [2022-03-03 17:06:05,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181393674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:06:05,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750256865] [2022-03-03 17:06:05,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:06:05,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:05,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:06:05,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:06:05,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:06:05,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:06:05,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:06:05,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-03 17:06:05,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:06:05,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:05,236 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:06:05,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:06:05,389 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-03 17:06:05,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-03 17:06:05,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:06:05,826 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-03 17:06:05,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-03 17:06:05,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:06,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:06,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:06,611 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:06:06,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-03 17:06:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:06:06,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:06:07,128 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1734 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1734))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1)))) (<= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-03 17:06:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:06:07,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750256865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:06:07,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:06:07,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-03 17:06:07,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702324535] [2022-03-03 17:06:07,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:06:07,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-03 17:06:07,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:07,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-03 17:06:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-03-03 17:06:07,245 INFO L87 Difference]: Start difference. First operand 17413 states and 49895 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:12,152 INFO L93 Difference]: Finished difference Result 44581 states and 127446 transitions. [2022-03-03 17:06:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:06:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:12,245 INFO L225 Difference]: With dead ends: 44581 [2022-03-03 17:06:12,245 INFO L226 Difference]: Without dead ends: 44581 [2022-03-03 17:06:12,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2432, Invalid=11143, Unknown=1, NotChecked=230, Total=13806 [2022-03-03 17:06:12,247 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 3664 mSDsluCounter, 12016 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 12326 SdHoareTripleChecker+Invalid, 5433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2009 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:12,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3664 Valid, 12326 Invalid, 5433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3370 Invalid, 0 Unknown, 2009 Unchecked, 1.4s Time] [2022-03-03 17:06:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44581 states. [2022-03-03 17:06:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44581 to 19551. [2022-03-03 17:06:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19551 states, 19550 states have (on average 2.870230179028133) internal successors, (56113), 19550 states have internal predecessors, (56113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 56113 transitions. [2022-03-03 17:06:12,781 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 56113 transitions. Word has length 177 [2022-03-03 17:06:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:12,782 INFO L470 AbstractCegarLoop]: Abstraction has 19551 states and 56113 transitions. [2022-03-03 17:06:12,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 56113 transitions. [2022-03-03 17:06:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:12,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:12,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:12,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:06:13,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:13,011 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1865483718, now seen corresponding path program 15 times [2022-03-03 17:06:13,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:13,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746568444] [2022-03-03 17:06:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:13,316 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:13,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746568444] [2022-03-03 17:06:13,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746568444] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:06:13,316 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078145531] [2022-03-03 17:06:13,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:06:13,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:13,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:06:13,318 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:06:13,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:06:13,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:06:13,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:06:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-03 17:06:13,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:06:13,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:13,507 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:06:13,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:06:13,635 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-03 17:06:13,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-03 17:06:13,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:06:14,062 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-03 17:06:14,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-03 17:06:14,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:14,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:14,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:14,599 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:06:14,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:06:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:06:14,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:06:14,959 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1774))) (let ((.cse0 (select .cse3 ~get2~0.base)) (.cse1 (select .cse3 c_~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-03 17:06:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:06:15,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078145531] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:06:15,084 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:06:15,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-03 17:06:15,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801543967] [2022-03-03 17:06:15,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:06:15,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 17:06:15,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 17:06:15,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2157, Unknown=1, NotChecked=94, Total=2450 [2022-03-03 17:06:15,086 INFO L87 Difference]: Start difference. First operand 19551 states and 56113 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:18,873 INFO L93 Difference]: Finished difference Result 43186 states and 124503 transitions. [2022-03-03 17:06:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 17:06:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:18,967 INFO L225 Difference]: With dead ends: 43186 [2022-03-03 17:06:18,967 INFO L226 Difference]: Without dead ends: 43186 [2022-03-03 17:06:18,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 335 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2108, Invalid=8401, Unknown=1, NotChecked=202, Total=10712 [2022-03-03 17:06:18,968 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 3282 mSDsluCounter, 9717 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 9907 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1428 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:18,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3282 Valid, 9907 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2797 Invalid, 0 Unknown, 1428 Unchecked, 1.1s Time] [2022-03-03 17:06:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43186 states. [2022-03-03 17:06:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43186 to 17743. [2022-03-03 17:06:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17743 states, 17742 states have (on average 2.8531732611881413) internal successors, (50621), 17742 states have internal predecessors, (50621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17743 states to 17743 states and 50621 transitions. [2022-03-03 17:06:19,452 INFO L78 Accepts]: Start accepts. Automaton has 17743 states and 50621 transitions. Word has length 177 [2022-03-03 17:06:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:19,452 INFO L470 AbstractCegarLoop]: Abstraction has 17743 states and 50621 transitions. [2022-03-03 17:06:19,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 17743 states and 50621 transitions. [2022-03-03 17:06:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:19,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:19,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:19,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-03-03 17:06:19,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:19,678 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:19,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1914474352, now seen corresponding path program 16 times [2022-03-03 17:06:19,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:19,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818152556] [2022-03-03 17:06:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:19,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:20,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:20,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818152556] [2022-03-03 17:06:20,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818152556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:20,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:20,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:20,101 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99292952] [2022-03-03 17:06:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:20,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:20,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:20,102 INFO L87 Difference]: Start difference. First operand 17743 states and 50621 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:20,989 INFO L93 Difference]: Finished difference Result 30803 states and 88387 transitions. [2022-03-03 17:06:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:06:20,990 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:21,057 INFO L225 Difference]: With dead ends: 30803 [2022-03-03 17:06:21,057 INFO L226 Difference]: Without dead ends: 30803 [2022-03-03 17:06:21,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:06:21,058 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1092 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:21,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 3859 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30803 states. [2022-03-03 17:06:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30803 to 17775. [2022-03-03 17:06:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17775 states, 17774 states have (on average 2.8538877011364914) internal successors, (50725), 17774 states have internal predecessors, (50725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17775 states to 17775 states and 50725 transitions. [2022-03-03 17:06:21,449 INFO L78 Accepts]: Start accepts. Automaton has 17775 states and 50725 transitions. Word has length 177 [2022-03-03 17:06:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:21,449 INFO L470 AbstractCegarLoop]: Abstraction has 17775 states and 50725 transitions. [2022-03-03 17:06:21,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 17775 states and 50725 transitions. [2022-03-03 17:06:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:21,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:21,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:21,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-03 17:06:21,475 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1042251538, now seen corresponding path program 17 times [2022-03-03 17:06:21,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:21,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704340457] [2022-03-03 17:06:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:22,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:22,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704340457] [2022-03-03 17:06:22,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704340457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:22,003 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:22,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:22,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907045697] [2022-03-03 17:06:22,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:22,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:22,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:22,004 INFO L87 Difference]: Start difference. First operand 17775 states and 50725 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:22,773 INFO L93 Difference]: Finished difference Result 27832 states and 80090 transitions. [2022-03-03 17:06:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:06:22,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:22,828 INFO L225 Difference]: With dead ends: 27832 [2022-03-03 17:06:22,829 INFO L226 Difference]: Without dead ends: 27832 [2022-03-03 17:06:22,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:06:22,829 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1119 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:22,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 3420 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27832 states. [2022-03-03 17:06:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27832 to 17783. [2022-03-03 17:06:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17783 states, 17782 states have (on average 2.8542908559217186) internal successors, (50755), 17782 states have internal predecessors, (50755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 50755 transitions. [2022-03-03 17:06:23,177 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 50755 transitions. Word has length 177 [2022-03-03 17:06:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:23,177 INFO L470 AbstractCegarLoop]: Abstraction has 17783 states and 50755 transitions. [2022-03-03 17:06:23,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 50755 transitions. [2022-03-03 17:06:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:23,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:23,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:23,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-03 17:06:23,202 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1153370902, now seen corresponding path program 22 times [2022-03-03 17:06:23,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:23,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108782184] [2022-03-03 17:06:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:23,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:23,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108782184] [2022-03-03 17:06:23,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108782184] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:23,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:23,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:23,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587898912] [2022-03-03 17:06:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:23,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:23,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:23,549 INFO L87 Difference]: Start difference. First operand 17783 states and 50755 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:24,279 INFO L93 Difference]: Finished difference Result 27496 states and 79058 transitions. [2022-03-03 17:06:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:06:24,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:24,335 INFO L225 Difference]: With dead ends: 27496 [2022-03-03 17:06:24,336 INFO L226 Difference]: Without dead ends: 27496 [2022-03-03 17:06:24,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:06:24,336 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1032 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:24,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3265 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:06:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27496 states. [2022-03-03 17:06:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27496 to 17815. [2022-03-03 17:06:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17815 states, 17814 states have (on average 2.8541035140900415) internal successors, (50843), 17814 states have internal predecessors, (50843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17815 states to 17815 states and 50843 transitions. [2022-03-03 17:06:24,701 INFO L78 Accepts]: Start accepts. Automaton has 17815 states and 50843 transitions. Word has length 177 [2022-03-03 17:06:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:24,701 INFO L470 AbstractCegarLoop]: Abstraction has 17815 states and 50843 transitions. [2022-03-03 17:06:24,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 17815 states and 50843 transitions. [2022-03-03 17:06:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:24,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:24,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:24,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-03 17:06:24,728 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1560044802, now seen corresponding path program 23 times [2022-03-03 17:06:24,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:24,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089800298] [2022-03-03 17:06:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:24,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:25,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:25,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089800298] [2022-03-03 17:06:25,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089800298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:06:25,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651148610] [2022-03-03 17:06:25,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:06:25,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:06:25,068 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:06:25,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:06:25,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:06:25,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:06:25,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-03 17:06:25,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:06:25,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:06:25,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:25,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:26,214 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:06:26,214 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:06:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:06:26,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:06:26,536 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1858 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1858))) (let ((.cse2 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse2 c_~get2~0.offset) (select .cse0 c_~get1~0.offset)))))) is different from false [2022-03-03 17:06:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:06:26,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651148610] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:06:26,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:06:26,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-03-03 17:06:26,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81516255] [2022-03-03 17:06:26,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:06:26,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 17:06:26,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 17:06:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1786, Unknown=1, NotChecked=86, Total=2070 [2022-03-03 17:06:26,651 INFO L87 Difference]: Start difference. First operand 17815 states and 50843 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:30,425 INFO L93 Difference]: Finished difference Result 32411 states and 93213 transitions. [2022-03-03 17:06:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:06:30,425 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:30,494 INFO L225 Difference]: With dead ends: 32411 [2022-03-03 17:06:30,494 INFO L226 Difference]: Without dead ends: 32411 [2022-03-03 17:06:30,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 338 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2116, Invalid=7987, Unknown=1, NotChecked=198, Total=10302 [2022-03-03 17:06:30,495 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2637 mSDsluCounter, 7657 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 7936 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 754 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:30,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2637 Valid, 7936 Invalid, 3465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2664 Invalid, 0 Unknown, 754 Unchecked, 1.1s Time] [2022-03-03 17:06:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32411 states. [2022-03-03 17:06:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32411 to 17783. [2022-03-03 17:06:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17783 states, 17782 states have (on average 2.8542908559217186) internal successors, (50755), 17782 states have internal predecessors, (50755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:30,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 50755 transitions. [2022-03-03 17:06:30,888 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 50755 transitions. Word has length 177 [2022-03-03 17:06:30,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:30,888 INFO L470 AbstractCegarLoop]: Abstraction has 17783 states and 50755 transitions. [2022-03-03 17:06:30,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 50755 transitions. [2022-03-03 17:06:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:30,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:30,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:30,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-03 17:06:31,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-03 17:06:31,116 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:31,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 796291028, now seen corresponding path program 18 times [2022-03-03 17:06:31,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:31,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96866507] [2022-03-03 17:06:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:31,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:31,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:31,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96866507] [2022-03-03 17:06:31,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96866507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:31,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:31,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:31,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362472778] [2022-03-03 17:06:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:31,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:31,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:31,473 INFO L87 Difference]: Start difference. First operand 17783 states and 50755 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:32,194 INFO L93 Difference]: Finished difference Result 27398 states and 78728 transitions. [2022-03-03 17:06:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:06:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:32,251 INFO L225 Difference]: With dead ends: 27398 [2022-03-03 17:06:32,251 INFO L226 Difference]: Without dead ends: 27398 [2022-03-03 17:06:32,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:06:32,252 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 946 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:32,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3495 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:32,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27398 states. [2022-03-03 17:06:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27398 to 17799. [2022-03-03 17:06:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 17798 states have (on average 2.855096078211035) internal successors, (50815), 17798 states have internal predecessors, (50815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 50815 transitions. [2022-03-03 17:06:32,607 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 50815 transitions. Word has length 177 [2022-03-03 17:06:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:32,608 INFO L470 AbstractCegarLoop]: Abstraction has 17799 states and 50815 transitions. [2022-03-03 17:06:32,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 50815 transitions. [2022-03-03 17:06:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:32,633 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:32,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:32,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-03 17:06:32,634 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash -256542246, now seen corresponding path program 24 times [2022-03-03 17:06:32,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:32,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471276449] [2022-03-03 17:06:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:32,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:32,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471276449] [2022-03-03 17:06:32,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471276449] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:32,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:32,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:32,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116415818] [2022-03-03 17:06:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:32,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:32,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:32,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:32,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:32,978 INFO L87 Difference]: Start difference. First operand 17799 states and 50815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:33,699 INFO L93 Difference]: Finished difference Result 27368 states and 78650 transitions. [2022-03-03 17:06:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:06:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:33,756 INFO L225 Difference]: With dead ends: 27368 [2022-03-03 17:06:33,756 INFO L226 Difference]: Without dead ends: 27368 [2022-03-03 17:06:33,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:06:33,756 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 817 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:33,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3049 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27368 states. [2022-03-03 17:06:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27368 to 17807. [2022-03-03 17:06:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17806 states have (on average 2.8550488599348536) internal successors, (50837), 17806 states have internal predecessors, (50837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 50837 transitions. [2022-03-03 17:06:34,106 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 50837 transitions. Word has length 177 [2022-03-03 17:06:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:34,106 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 50837 transitions. [2022-03-03 17:06:34,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 50837 transitions. [2022-03-03 17:06:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:34,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:34,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:34,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-03 17:06:34,133 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -529073644, now seen corresponding path program 25 times [2022-03-03 17:06:34,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:34,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443023316] [2022-03-03 17:06:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:34,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:34,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:34,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443023316] [2022-03-03 17:06:34,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443023316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:34,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:34,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:34,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403913970] [2022-03-03 17:06:34,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:34,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:34,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:34,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:34,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:34,563 INFO L87 Difference]: Start difference. First operand 17807 states and 50837 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:35,277 INFO L93 Difference]: Finished difference Result 27198 states and 78180 transitions. [2022-03-03 17:06:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:06:35,277 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:35,329 INFO L225 Difference]: With dead ends: 27198 [2022-03-03 17:06:35,330 INFO L226 Difference]: Without dead ends: 27198 [2022-03-03 17:06:35,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:06:35,330 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1446 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:35,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2929 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:06:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27198 states. [2022-03-03 17:06:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27198 to 17799. [2022-03-03 17:06:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 17798 states have (on average 2.855096078211035) internal successors, (50815), 17798 states have internal predecessors, (50815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 50815 transitions. [2022-03-03 17:06:35,660 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 50815 transitions. Word has length 177 [2022-03-03 17:06:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:35,660 INFO L470 AbstractCegarLoop]: Abstraction has 17799 states and 50815 transitions. [2022-03-03 17:06:35,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 50815 transitions. [2022-03-03 17:06:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:35,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:35,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:35,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-03 17:06:35,685 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash -65498902, now seen corresponding path program 14 times [2022-03-03 17:06:35,685 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:35,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95577102] [2022-03-03 17:06:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:35,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:36,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:36,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95577102] [2022-03-03 17:06:36,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95577102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:36,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:36,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:36,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768293758] [2022-03-03 17:06:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:36,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:36,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:36,109 INFO L87 Difference]: Start difference. First operand 17799 states and 50815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:36,918 INFO L93 Difference]: Finished difference Result 27318 states and 78518 transitions. [2022-03-03 17:06:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:06:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:36,976 INFO L225 Difference]: With dead ends: 27318 [2022-03-03 17:06:36,976 INFO L226 Difference]: Without dead ends: 27318 [2022-03-03 17:06:36,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:06:36,976 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1178 mSDsluCounter, 3783 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:36,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 4086 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27318 states. [2022-03-03 17:06:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27318 to 17807. [2022-03-03 17:06:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17806 states have (on average 2.853700999663035) internal successors, (50813), 17806 states have internal predecessors, (50813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 50813 transitions. [2022-03-03 17:06:37,448 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 50813 transitions. Word has length 177 [2022-03-03 17:06:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:37,448 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 50813 transitions. [2022-03-03 17:06:37,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 50813 transitions. [2022-03-03 17:06:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:37,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:37,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:37,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-03 17:06:37,476 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:37,477 INFO L85 PathProgramCache]: Analyzing trace with hash -82872490, now seen corresponding path program 26 times [2022-03-03 17:06:37,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:37,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463275950] [2022-03-03 17:06:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:37,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:37,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463275950] [2022-03-03 17:06:37,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463275950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:37,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:37,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:37,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382509096] [2022-03-03 17:06:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:37,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:37,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:37,831 INFO L87 Difference]: Start difference. First operand 17807 states and 50813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:38,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:38,602 INFO L93 Difference]: Finished difference Result 28192 states and 80964 transitions. [2022-03-03 17:06:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:06:38,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:38,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:38,661 INFO L225 Difference]: With dead ends: 28192 [2022-03-03 17:06:38,662 INFO L226 Difference]: Without dead ends: 28192 [2022-03-03 17:06:38,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:06:38,662 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1107 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:38,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 3238 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28192 states. [2022-03-03 17:06:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28192 to 17871. [2022-03-03 17:06:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 17870 states have (on average 2.853329602686066) internal successors, (50989), 17870 states have internal predecessors, (50989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 50989 transitions. [2022-03-03 17:06:39,019 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 50989 transitions. Word has length 177 [2022-03-03 17:06:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:39,019 INFO L470 AbstractCegarLoop]: Abstraction has 17871 states and 50989 transitions. [2022-03-03 17:06:39,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 50989 transitions. [2022-03-03 17:06:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:39,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:39,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:39,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-03 17:06:39,046 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 323801410, now seen corresponding path program 27 times [2022-03-03 17:06:39,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:39,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301333640] [2022-03-03 17:06:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:39,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:39,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301333640] [2022-03-03 17:06:39,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301333640] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:06:39,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061094753] [2022-03-03 17:06:39,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:06:39,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:39,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:06:39,377 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:06:39,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:06:39,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:06:39,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:06:39,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-03 17:06:39,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:06:40,052 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:06:40,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-03 17:06:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:40,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:06:40,322 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-03 17:06:40,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 49 [2022-03-03 17:06:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:40,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061094753] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:06:40,477 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:06:40,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 32 [2022-03-03 17:06:40,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570647498] [2022-03-03 17:06:40,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:06:40,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:06:40,477 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:06:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:06:40,478 INFO L87 Difference]: Start difference. First operand 17871 states and 50989 transitions. Second operand has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:42,218 INFO L93 Difference]: Finished difference Result 37467 states and 107671 transitions. [2022-03-03 17:06:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:06:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:42,294 INFO L225 Difference]: With dead ends: 37467 [2022-03-03 17:06:42,295 INFO L226 Difference]: Without dead ends: 37467 [2022-03-03 17:06:42,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=971, Invalid=3999, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:06:42,295 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1444 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 8261 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 722 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:42,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 8261 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2029 Invalid, 0 Unknown, 722 Unchecked, 0.8s Time] [2022-03-03 17:06:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37467 states. [2022-03-03 17:06:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37467 to 19823. [2022-03-03 17:06:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19823 states, 19822 states have (on average 2.869387549187771) internal successors, (56877), 19822 states have internal predecessors, (56877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19823 states to 19823 states and 56877 transitions. [2022-03-03 17:06:42,827 INFO L78 Accepts]: Start accepts. Automaton has 19823 states and 56877 transitions. Word has length 177 [2022-03-03 17:06:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:42,827 INFO L470 AbstractCegarLoop]: Abstraction has 19823 states and 56877 transitions. [2022-03-03 17:06:42,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 19823 states and 56877 transitions. [2022-03-03 17:06:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:42,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:42,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:42,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:06:43,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-03-03 17:06:43,056 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash 734895440, now seen corresponding path program 16 times [2022-03-03 17:06:43,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:43,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763332055] [2022-03-03 17:06:43,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:43,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:43,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763332055] [2022-03-03 17:06:43,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763332055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:06:43,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098349806] [2022-03-03 17:06:43,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:06:43,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:43,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:06:43,409 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:06:43,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:06:43,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:06:43,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:06:43,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 17:06:43,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:06:44,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:06:44,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:44,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:06:44,515 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:06:44,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:06:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:06:44,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:06:44,828 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_2006 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2006))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-03 17:06:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:06:44,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098349806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:06:44,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:06:44,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-03-03 17:06:44,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741428294] [2022-03-03 17:06:44,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:06:44,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 17:06:44,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 17:06:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1705, Unknown=1, NotChecked=84, Total=1980 [2022-03-03 17:06:44,999 INFO L87 Difference]: Start difference. First operand 19823 states and 56877 transitions. Second operand has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:48,100 INFO L93 Difference]: Finished difference Result 43716 states and 126019 transitions. [2022-03-03 17:06:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 17:06:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:48,192 INFO L225 Difference]: With dead ends: 43716 [2022-03-03 17:06:48,192 INFO L226 Difference]: Without dead ends: 43716 [2022-03-03 17:06:48,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 337 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1752, Invalid=6623, Unknown=1, NotChecked=180, Total=8556 [2022-03-03 17:06:48,193 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 2856 mSDsluCounter, 7140 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1068 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:48,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 7400 Invalid, 3721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2610 Invalid, 0 Unknown, 1068 Unchecked, 1.1s Time] [2022-03-03 17:06:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43716 states. [2022-03-03 17:06:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43716 to 19303. [2022-03-03 17:06:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 2.869391772873277) internal successors, (55385), 19302 states have internal predecessors, (55385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 55385 transitions. [2022-03-03 17:06:48,719 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 55385 transitions. Word has length 177 [2022-03-03 17:06:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:48,719 INFO L470 AbstractCegarLoop]: Abstraction has 19303 states and 55385 transitions. [2022-03-03 17:06:48,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 55385 transitions. [2022-03-03 17:06:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:48,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:48,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:48,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:06:48,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:48,948 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:48,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash 732676534, now seen corresponding path program 19 times [2022-03-03 17:06:48,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:48,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404122761] [2022-03-03 17:06:48,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:48,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:49,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:49,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404122761] [2022-03-03 17:06:49,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404122761] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:49,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:49,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:49,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027082060] [2022-03-03 17:06:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:49,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:49,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:49,367 INFO L87 Difference]: Start difference. First operand 19303 states and 55385 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:50,098 INFO L93 Difference]: Finished difference Result 29034 states and 83720 transitions. [2022-03-03 17:06:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:06:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:50,159 INFO L225 Difference]: With dead ends: 29034 [2022-03-03 17:06:50,159 INFO L226 Difference]: Without dead ends: 29034 [2022-03-03 17:06:50,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:06:50,160 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 944 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:50,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 3231 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29034 states. [2022-03-03 17:06:50,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29034 to 19303. [2022-03-03 17:06:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 2.869391772873277) internal successors, (55385), 19302 states have internal predecessors, (55385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 55385 transitions. [2022-03-03 17:06:50,553 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 55385 transitions. Word has length 177 [2022-03-03 17:06:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:50,554 INFO L470 AbstractCegarLoop]: Abstraction has 19303 states and 55385 transitions. [2022-03-03 17:06:50,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 55385 transitions. [2022-03-03 17:06:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:50,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:50,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:50,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-03 17:06:50,582 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1840748610, now seen corresponding path program 17 times [2022-03-03 17:06:50,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:50,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772903253] [2022-03-03 17:06:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:50,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:50,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772903253] [2022-03-03 17:06:50,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772903253] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:50,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:50,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:50,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653253693] [2022-03-03 17:06:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:50,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:50,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:50,927 INFO L87 Difference]: Start difference. First operand 19303 states and 55385 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:51,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:51,601 INFO L93 Difference]: Finished difference Result 28618 states and 82436 transitions. [2022-03-03 17:06:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:06:51,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:51,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:51,659 INFO L225 Difference]: With dead ends: 28618 [2022-03-03 17:06:51,660 INFO L226 Difference]: Without dead ends: 28618 [2022-03-03 17:06:51,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:06:51,660 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 911 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:51,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2674 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:06:51,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28618 states. [2022-03-03 17:06:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28618 to 19311. [2022-03-03 17:06:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19310 states have (on average 2.869031589849819) internal successors, (55401), 19310 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 55401 transitions. [2022-03-03 17:06:52,032 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 55401 transitions. Word has length 177 [2022-03-03 17:06:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:52,032 INFO L470 AbstractCegarLoop]: Abstraction has 19311 states and 55401 transitions. [2022-03-03 17:06:52,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 55401 transitions. [2022-03-03 17:06:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:52,061 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:52,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:52,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-03 17:06:52,061 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -597878358, now seen corresponding path program 18 times [2022-03-03 17:06:52,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:52,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462142581] [2022-03-03 17:06:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:52,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:52,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462142581] [2022-03-03 17:06:52,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462142581] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:06:52,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357821082] [2022-03-03 17:06:52,413 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:06:52,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:06:52,414 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:06:52,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:06:52,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:06:52,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:06:52,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 17:06:52,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:06:52,981 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:06:52,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:06:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:53,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:06:53,229 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-03 17:06:53,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-03 17:06:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:53,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357821082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:06:53,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:06:53,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-03-03 17:06:53,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318027092] [2022-03-03 17:06:53,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:06:53,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:06:53,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:06:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:06:53,375 INFO L87 Difference]: Start difference. First operand 19311 states and 55401 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:54,974 INFO L93 Difference]: Finished difference Result 32416 states and 93767 transitions. [2022-03-03 17:06:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:06:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:55,040 INFO L225 Difference]: With dead ends: 32416 [2022-03-03 17:06:55,040 INFO L226 Difference]: Without dead ends: 32416 [2022-03-03 17:06:55,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 357 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=936, Invalid=3620, Unknown=0, NotChecked=0, Total=4556 [2022-03-03 17:06:55,040 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1753 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:55,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 5020 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1530 Invalid, 0 Unknown, 639 Unchecked, 0.6s Time] [2022-03-03 17:06:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32416 states. [2022-03-03 17:06:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32416 to 19367. [2022-03-03 17:06:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19367 states, 19366 states have (on average 2.86910048538676) internal successors, (55563), 19366 states have internal predecessors, (55563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19367 states to 19367 states and 55563 transitions. [2022-03-03 17:06:55,439 INFO L78 Accepts]: Start accepts. Automaton has 19367 states and 55563 transitions. Word has length 177 [2022-03-03 17:06:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:55,439 INFO L470 AbstractCegarLoop]: Abstraction has 19367 states and 55563 transitions. [2022-03-03 17:06:55,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 19367 states and 55563 transitions. [2022-03-03 17:06:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:55,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:55,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:55,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:06:55,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:06:55,667 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1723748196, now seen corresponding path program 20 times [2022-03-03 17:06:55,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:55,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56098345] [2022-03-03 17:06:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:56,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:56,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56098345] [2022-03-03 17:06:56,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56098345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:56,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:56,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:56,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549976802] [2022-03-03 17:06:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:56,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:56,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:56,097 INFO L87 Difference]: Start difference. First operand 19367 states and 55563 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:56,840 INFO L93 Difference]: Finished difference Result 28752 states and 82832 transitions. [2022-03-03 17:06:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:06:56,840 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:56,898 INFO L225 Difference]: With dead ends: 28752 [2022-03-03 17:06:56,898 INFO L226 Difference]: Without dead ends: 28752 [2022-03-03 17:06:56,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:06:56,899 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 867 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:56,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3003 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:06:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28752 states. [2022-03-03 17:06:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28752 to 19383. [2022-03-03 17:06:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19383 states, 19382 states have (on average 2.869827675162522) internal successors, (55623), 19382 states have internal predecessors, (55623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19383 states to 19383 states and 55623 transitions. [2022-03-03 17:06:57,264 INFO L78 Accepts]: Start accepts. Automaton has 19383 states and 55623 transitions. Word has length 177 [2022-03-03 17:06:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:57,264 INFO L470 AbstractCegarLoop]: Abstraction has 19383 states and 55623 transitions. [2022-03-03 17:06:57,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 19383 states and 55623 transitions. [2022-03-03 17:06:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:57,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:57,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:57,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-03 17:06:57,292 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1044305538, now seen corresponding path program 19 times [2022-03-03 17:06:57,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:57,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209213215] [2022-03-03 17:06:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:57,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:57,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:57,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209213215] [2022-03-03 17:06:57,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209213215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:57,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:57,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:06:57,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685410607] [2022-03-03 17:06:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:57,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:06:57,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:57,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:06:57,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:06:57,646 INFO L87 Difference]: Start difference. First operand 19383 states and 55623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:58,292 INFO L93 Difference]: Finished difference Result 28706 states and 82702 transitions. [2022-03-03 17:06:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:06:58,292 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:58,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:06:58,350 INFO L225 Difference]: With dead ends: 28706 [2022-03-03 17:06:58,350 INFO L226 Difference]: Without dead ends: 28706 [2022-03-03 17:06:58,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:06:58,351 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 946 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:06:58,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 2791 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:06:58,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28706 states. [2022-03-03 17:06:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28706 to 19391. [2022-03-03 17:06:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19391 states, 19390 states have (on average 2.869778236204229) internal successors, (55645), 19390 states have internal predecessors, (55645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19391 states to 19391 states and 55645 transitions. [2022-03-03 17:06:58,794 INFO L78 Accepts]: Start accepts. Automaton has 19391 states and 55645 transitions. Word has length 177 [2022-03-03 17:06:58,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:06:58,794 INFO L470 AbstractCegarLoop]: Abstraction has 19391 states and 55645 transitions. [2022-03-03 17:06:58,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 19391 states and 55645 transitions. [2022-03-03 17:06:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:06:58,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:06:58,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:06:58,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-03 17:06:58,823 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:06:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:06:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1245854428, now seen corresponding path program 28 times [2022-03-03 17:06:58,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:06:58,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802723297] [2022-03-03 17:06:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:06:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:06:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:06:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:06:59,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:06:59,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802723297] [2022-03-03 17:06:59,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802723297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:06:59,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:06:59,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:06:59,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807631910] [2022-03-03 17:06:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:06:59,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:06:59,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:06:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:06:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:06:59,203 INFO L87 Difference]: Start difference. First operand 19391 states and 55645 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:06:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:06:59,933 INFO L93 Difference]: Finished difference Result 28408 states and 81872 transitions. [2022-03-03 17:06:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:06:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:06:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:00,001 INFO L225 Difference]: With dead ends: 28408 [2022-03-03 17:07:00,001 INFO L226 Difference]: Without dead ends: 28408 [2022-03-03 17:07:00,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:07:00,002 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1050 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:00,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3328 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-03-03 17:07:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 19383. [2022-03-03 17:07:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19383 states, 19382 states have (on average 2.869827675162522) internal successors, (55623), 19382 states have internal predecessors, (55623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19383 states to 19383 states and 55623 transitions. [2022-03-03 17:07:00,388 INFO L78 Accepts]: Start accepts. Automaton has 19383 states and 55623 transitions. Word has length 177 [2022-03-03 17:07:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:00,388 INFO L470 AbstractCegarLoop]: Abstraction has 19383 states and 55623 transitions. [2022-03-03 17:07:00,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 19383 states and 55623 transitions. [2022-03-03 17:07:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:00,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:00,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:00,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-03 17:07:00,416 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1709429170, now seen corresponding path program 15 times [2022-03-03 17:07:00,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:00,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802297421] [2022-03-03 17:07:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:00,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:00,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:00,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802297421] [2022-03-03 17:07:00,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802297421] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:00,775 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:00,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:07:00,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994341583] [2022-03-03 17:07:00,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:00,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:07:00,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:00,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:07:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:07:00,777 INFO L87 Difference]: Start difference. First operand 19383 states and 55623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:01,487 INFO L93 Difference]: Finished difference Result 28536 states and 82240 transitions. [2022-03-03 17:07:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:07:01,487 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:01,551 INFO L225 Difference]: With dead ends: 28536 [2022-03-03 17:07:01,551 INFO L226 Difference]: Without dead ends: 28536 [2022-03-03 17:07:01,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:07:01,552 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1419 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:01,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 2864 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:07:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28536 states. [2022-03-03 17:07:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28536 to 19359. [2022-03-03 17:07:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19359 states, 19358 states have (on average 2.8687364397148465) internal successors, (55533), 19358 states have internal predecessors, (55533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 55533 transitions. [2022-03-03 17:07:01,922 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 55533 transitions. Word has length 177 [2022-03-03 17:07:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:01,922 INFO L470 AbstractCegarLoop]: Abstraction has 19359 states and 55533 transitions. [2022-03-03 17:07:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 55533 transitions. [2022-03-03 17:07:01,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:01,951 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:01,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:01,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-03 17:07:01,952 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash 895297868, now seen corresponding path program 21 times [2022-03-03 17:07:01,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:01,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432336742] [2022-03-03 17:07:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:01,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:02,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:02,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432336742] [2022-03-03 17:07:02,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432336742] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:02,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:02,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:02,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843406626] [2022-03-03 17:07:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:02,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:02,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:02,317 INFO L87 Difference]: Start difference. First operand 19359 states and 55533 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:03,038 INFO L93 Difference]: Finished difference Result 28640 states and 82468 transitions. [2022-03-03 17:07:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:07:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:03,101 INFO L225 Difference]: With dead ends: 28640 [2022-03-03 17:07:03,101 INFO L226 Difference]: Without dead ends: 28640 [2022-03-03 17:07:03,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:07:03,101 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 890 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:03,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2909 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:07:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28640 states. [2022-03-03 17:07:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28640 to 19359. [2022-03-03 17:07:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19359 states, 19358 states have (on average 2.8683231738815995) internal successors, (55525), 19358 states have internal predecessors, (55525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 55525 transitions. [2022-03-03 17:07:03,462 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 55525 transitions. Word has length 177 [2022-03-03 17:07:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:03,463 INFO L470 AbstractCegarLoop]: Abstraction has 19359 states and 55525 transitions. [2022-03-03 17:07:03,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 55525 transitions. [2022-03-03 17:07:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:03,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:03,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:03,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-03 17:07:03,491 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -631615694, now seen corresponding path program 20 times [2022-03-03 17:07:03,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:03,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577982106] [2022-03-03 17:07:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:03,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:03,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577982106] [2022-03-03 17:07:03,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577982106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:03,829 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:03,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:07:03,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838213932] [2022-03-03 17:07:03,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:03,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:07:03,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:07:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:07:03,830 INFO L87 Difference]: Start difference. First operand 19359 states and 55525 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:04,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:04,483 INFO L93 Difference]: Finished difference Result 28428 states and 81862 transitions. [2022-03-03 17:07:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:07:04,483 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:04,540 INFO L225 Difference]: With dead ends: 28428 [2022-03-03 17:07:04,541 INFO L226 Difference]: Without dead ends: 28428 [2022-03-03 17:07:04,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:07:04,541 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1024 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:04,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3142 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:07:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28428 states. [2022-03-03 17:07:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28428 to 19327. [2022-03-03 17:07:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19327 states, 19326 states have (on average 2.8666563179136912) internal successors, (55401), 19326 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19327 states to 19327 states and 55401 transitions. [2022-03-03 17:07:04,893 INFO L78 Accepts]: Start accepts. Automaton has 19327 states and 55401 transitions. Word has length 177 [2022-03-03 17:07:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:04,893 INFO L470 AbstractCegarLoop]: Abstraction has 19327 states and 55401 transitions. [2022-03-03 17:07:04,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 19327 states and 55401 transitions. [2022-03-03 17:07:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:04,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:04,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:04,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-03 17:07:04,920 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -430066804, now seen corresponding path program 29 times [2022-03-03 17:07:04,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:04,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498318460] [2022-03-03 17:07:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:05,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:05,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498318460] [2022-03-03 17:07:05,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498318460] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:05,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:05,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:05,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172866349] [2022-03-03 17:07:05,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:05,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:05,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:05,276 INFO L87 Difference]: Start difference. First operand 19327 states and 55401 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:06,067 INFO L93 Difference]: Finished difference Result 28272 states and 81418 transitions. [2022-03-03 17:07:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:07:06,068 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:06,126 INFO L225 Difference]: With dead ends: 28272 [2022-03-03 17:07:06,126 INFO L226 Difference]: Without dead ends: 28272 [2022-03-03 17:07:06,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:07:06,126 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 975 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:06,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 3436 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28272 states. [2022-03-03 17:07:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28272 to 19327. [2022-03-03 17:07:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19327 states, 19326 states have (on average 2.8666563179136912) internal successors, (55401), 19326 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19327 states to 19327 states and 55401 transitions. [2022-03-03 17:07:06,620 INFO L78 Accepts]: Start accepts. Automaton has 19327 states and 55401 transitions. Word has length 177 [2022-03-03 17:07:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:06,620 INFO L470 AbstractCegarLoop]: Abstraction has 19327 states and 55401 transitions. [2022-03-03 17:07:06,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19327 states and 55401 transitions. [2022-03-03 17:07:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:06,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:06,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:06,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-03 17:07:06,649 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash 33507938, now seen corresponding path program 16 times [2022-03-03 17:07:06,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:06,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743535202] [2022-03-03 17:07:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:06,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:07,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:07,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743535202] [2022-03-03 17:07:07,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743535202] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:07,006 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:07,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:07:07,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790817212] [2022-03-03 17:07:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:07,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:07:07,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:07,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:07:07,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:07:07,006 INFO L87 Difference]: Start difference. First operand 19327 states and 55401 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:07,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:07,724 INFO L93 Difference]: Finished difference Result 28408 states and 81808 transitions. [2022-03-03 17:07:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:07:07,724 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:07,783 INFO L225 Difference]: With dead ends: 28408 [2022-03-03 17:07:07,783 INFO L226 Difference]: Without dead ends: 28408 [2022-03-03 17:07:07,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:07:07,783 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1265 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:07,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 2901 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-03-03 17:07:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 19319. [2022-03-03 17:07:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19319 states, 19318 states have (on average 2.865876384718915) internal successors, (55363), 19318 states have internal predecessors, (55363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19319 states to 19319 states and 55363 transitions. [2022-03-03 17:07:08,135 INFO L78 Accepts]: Start accepts. Automaton has 19319 states and 55363 transitions. Word has length 177 [2022-03-03 17:07:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:08,135 INFO L470 AbstractCegarLoop]: Abstraction has 19319 states and 55363 transitions. [2022-03-03 17:07:08,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 19319 states and 55363 transitions. [2022-03-03 17:07:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:08,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:08,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:08,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-03 17:07:08,163 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2064745658, now seen corresponding path program 30 times [2022-03-03 17:07:08,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:08,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287945252] [2022-03-03 17:07:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:08,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:08,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287945252] [2022-03-03 17:07:08,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287945252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:08,514 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:08,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:08,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171743059] [2022-03-03 17:07:08,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:08,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:08,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:08,515 INFO L87 Difference]: Start difference. First operand 19319 states and 55363 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:09,265 INFO L93 Difference]: Finished difference Result 27856 states and 80114 transitions. [2022-03-03 17:07:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:07:09,266 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:09,322 INFO L225 Difference]: With dead ends: 27856 [2022-03-03 17:07:09,322 INFO L226 Difference]: Without dead ends: 27856 [2022-03-03 17:07:09,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:07:09,322 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1051 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:09,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3101 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:07:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-03 17:07:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 19199. [2022-03-03 17:07:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19199 states, 19198 states have (on average 2.8648296697572664) internal successors, (54999), 19198 states have internal predecessors, (54999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19199 states to 19199 states and 54999 transitions. [2022-03-03 17:07:09,676 INFO L78 Accepts]: Start accepts. Automaton has 19199 states and 54999 transitions. Word has length 177 [2022-03-03 17:07:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:09,677 INFO L470 AbstractCegarLoop]: Abstraction has 19199 states and 54999 transitions. [2022-03-03 17:07:09,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 19199 states and 54999 transitions. [2022-03-03 17:07:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:09,704 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:09,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:09,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-03 17:07:09,705 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1769863266, now seen corresponding path program 17 times [2022-03-03 17:07:09,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:09,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987249355] [2022-03-03 17:07:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:09,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:10,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:10,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987249355] [2022-03-03 17:07:10,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987249355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:10,054 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:10,054 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:07:10,054 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913944811] [2022-03-03 17:07:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:10,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:07:10,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:07:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:07:10,055 INFO L87 Difference]: Start difference. First operand 19199 states and 54999 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:10,869 INFO L93 Difference]: Finished difference Result 27928 states and 80304 transitions. [2022-03-03 17:07:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:07:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:10,929 INFO L225 Difference]: With dead ends: 27928 [2022-03-03 17:07:10,929 INFO L226 Difference]: Without dead ends: 27928 [2022-03-03 17:07:10,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:07:10,930 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1137 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:10,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2777 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:07:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2022-03-03 17:07:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 19215. [2022-03-03 17:07:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19215 states, 19214 states have (on average 2.8647340480899346) internal successors, (55043), 19214 states have internal predecessors, (55043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19215 states to 19215 states and 55043 transitions. [2022-03-03 17:07:11,296 INFO L78 Accepts]: Start accepts. Automaton has 19215 states and 55043 transitions. Word has length 177 [2022-03-03 17:07:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:11,296 INFO L470 AbstractCegarLoop]: Abstraction has 19215 states and 55043 transitions. [2022-03-03 17:07:11,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 19215 states and 55043 transitions. [2022-03-03 17:07:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:11,324 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:11,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:11,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-03 17:07:11,324 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash 430740608, now seen corresponding path program 18 times [2022-03-03 17:07:11,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:11,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079131531] [2022-03-03 17:07:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:11,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:11,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079131531] [2022-03-03 17:07:11,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079131531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:11,657 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:11,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:07:11,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541112335] [2022-03-03 17:07:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:11,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:07:11,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:07:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:07:11,658 INFO L87 Difference]: Start difference. First operand 19215 states and 55043 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:12,498 INFO L93 Difference]: Finished difference Result 27928 states and 80096 transitions. [2022-03-03 17:07:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:07:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:12,552 INFO L225 Difference]: With dead ends: 27928 [2022-03-03 17:07:12,552 INFO L226 Difference]: Without dead ends: 27928 [2022-03-03 17:07:12,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:07:12,552 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 806 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:12,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3935 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2022-03-03 17:07:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 19163. [2022-03-03 17:07:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19163 states, 19162 states have (on average 2.8647844692620814) internal successors, (54895), 19162 states have internal predecessors, (54895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19163 states to 19163 states and 54895 transitions. [2022-03-03 17:07:12,902 INFO L78 Accepts]: Start accepts. Automaton has 19163 states and 54895 transitions. Word has length 177 [2022-03-03 17:07:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:12,902 INFO L470 AbstractCegarLoop]: Abstraction has 19163 states and 54895 transitions. [2022-03-03 17:07:12,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 19163 states and 54895 transitions. [2022-03-03 17:07:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:12,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:12,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:12,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-03 17:07:12,930 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -267298982, now seen corresponding path program 21 times [2022-03-03 17:07:12,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:12,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275326940] [2022-03-03 17:07:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:13,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:13,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275326940] [2022-03-03 17:07:13,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275326940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:07:13,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319044573] [2022-03-03 17:07:13,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:07:13,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:13,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:07:13,272 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:07:13,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:07:13,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:07:13,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:07:13,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 17:07:13,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:07:13,845 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:07:13,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:07:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:13,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:07:14,090 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-03 17:07:14,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-03 17:07:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:14,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319044573] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:07:14,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:07:14,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-03 17:07:14,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982280816] [2022-03-03 17:07:14,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:07:14,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-03 17:07:14,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:14,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-03 17:07:14,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-03-03 17:07:14,223 INFO L87 Difference]: Start difference. First operand 19163 states and 54895 transitions. Second operand has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:16,189 INFO L93 Difference]: Finished difference Result 30218 states and 86676 transitions. [2022-03-03 17:07:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 17:07:16,189 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:16,250 INFO L225 Difference]: With dead ends: 30218 [2022-03-03 17:07:16,251 INFO L226 Difference]: Without dead ends: 30218 [2022-03-03 17:07:16,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1191, Invalid=4661, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 17:07:16,251 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 1485 mSDsluCounter, 6043 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 6384 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:16,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 6384 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1644 Invalid, 0 Unknown, 389 Unchecked, 0.6s Time] [2022-03-03 17:07:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30218 states. [2022-03-03 17:07:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30218 to 18725. [2022-03-03 17:07:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18725 states, 18724 states have (on average 2.8766823328348643) internal successors, (53863), 18724 states have internal predecessors, (53863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18725 states to 18725 states and 53863 transitions. [2022-03-03 17:07:16,630 INFO L78 Accepts]: Start accepts. Automaton has 18725 states and 53863 transitions. Word has length 177 [2022-03-03 17:07:16,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:16,630 INFO L470 AbstractCegarLoop]: Abstraction has 18725 states and 53863 transitions. [2022-03-03 17:07:16,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:16,631 INFO L276 IsEmpty]: Start isEmpty. Operand 18725 states and 53863 transitions. [2022-03-03 17:07:16,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:16,658 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:16,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:16,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 17:07:16,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:16,859 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1786844712, now seen corresponding path program 22 times [2022-03-03 17:07:16,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:16,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180412933] [2022-03-03 17:07:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:17,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:17,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180412933] [2022-03-03 17:07:17,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180412933] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:07:17,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801246016] [2022-03-03 17:07:17,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:07:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:07:17,187 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:07:17,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:07:17,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:07:17,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:07:17,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 17:07:17,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:07:17,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:07:18,009 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:18,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:18,333 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:07:18,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:07:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:07:18,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:07:18,647 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_2314 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2314))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-03 17:07:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-03 17:07:18,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801246016] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:07:18,759 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:07:18,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-03-03 17:07:18,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876217768] [2022-03-03 17:07:18,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:07:18,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-03 17:07:18,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-03 17:07:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1700, Unknown=1, NotChecked=84, Total=1980 [2022-03-03 17:07:18,760 INFO L87 Difference]: Start difference. First operand 18725 states and 53863 transitions. Second operand has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:21,249 INFO L93 Difference]: Finished difference Result 28587 states and 81814 transitions. [2022-03-03 17:07:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 17:07:21,249 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:21,309 INFO L225 Difference]: With dead ends: 28587 [2022-03-03 17:07:21,309 INFO L226 Difference]: Without dead ends: 28587 [2022-03-03 17:07:21,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1281, Invalid=5202, Unknown=1, NotChecked=158, Total=6642 [2022-03-03 17:07:21,310 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1987 mSDsluCounter, 6937 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 7240 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1189 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:21,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1987 Valid, 7240 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2378 Invalid, 0 Unknown, 1189 Unchecked, 0.9s Time] [2022-03-03 17:07:21,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28587 states. [2022-03-03 17:07:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28587 to 17305. [2022-03-03 17:07:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-03 17:07:21,689 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-03 17:07:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:21,690 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-03 17:07:21,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-03 17:07:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:21,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:21,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:21,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-03 17:07:21,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-03 17:07:21,916 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 106754244, now seen corresponding path program 22 times [2022-03-03 17:07:21,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:21,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196862044] [2022-03-03 17:07:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:22,350 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:22,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196862044] [2022-03-03 17:07:22,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196862044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:22,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:22,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:22,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413236358] [2022-03-03 17:07:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:22,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:22,351 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:23,279 INFO L93 Difference]: Finished difference Result 33032 states and 94773 transitions. [2022-03-03 17:07:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:07:23,280 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:23,352 INFO L225 Difference]: With dead ends: 33032 [2022-03-03 17:07:23,352 INFO L226 Difference]: Without dead ends: 33032 [2022-03-03 17:07:23,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1621, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:07:23,353 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1529 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:23,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 3900 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33032 states. [2022-03-03 17:07:23,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33032 to 17305. [2022-03-03 17:07:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-03 17:07:23,744 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-03 17:07:23,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:23,744 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-03 17:07:23,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-03 17:07:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:23,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:23,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:23,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-03 17:07:23,769 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1999415984, now seen corresponding path program 23 times [2022-03-03 17:07:23,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:23,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941869887] [2022-03-03 17:07:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:24,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:24,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941869887] [2022-03-03 17:07:24,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941869887] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:07:24,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890514386] [2022-03-03 17:07:24,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:07:24,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:24,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:07:24,142 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:07:24,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:07:24,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:07:24,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:07:24,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-03 17:07:24,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:07:24,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:24,379 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:07:24,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:07:24,702 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:07:24,905 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:07:24,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:07:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:24,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:07:25,151 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2364 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2364))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-03 17:07:25,194 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:07:25,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-03 17:07:25,219 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:25,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-03 17:07:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:26,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890514386] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:07:26,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:07:26,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-03-03 17:07:26,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605702239] [2022-03-03 17:07:26,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:07:26,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:07:26,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:26,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:07:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-03-03 17:07:26,078 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:27,956 INFO L93 Difference]: Finished difference Result 37416 states and 107769 transitions. [2022-03-03 17:07:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:07:27,957 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:28,034 INFO L225 Difference]: With dead ends: 37416 [2022-03-03 17:07:28,034 INFO L226 Difference]: Without dead ends: 37416 [2022-03-03 17:07:28,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1150, Invalid=4859, Unknown=1, NotChecked=152, Total=6162 [2022-03-03 17:07:28,035 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 2532 mSDsluCounter, 6994 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 7303 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1001 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:28,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 7303 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1662 Invalid, 0 Unknown, 1001 Unchecked, 0.7s Time] [2022-03-03 17:07:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37416 states. [2022-03-03 17:07:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37416 to 17515. [2022-03-03 17:07:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17515 states, 17514 states have (on average 2.8666780861025467) internal successors, (50207), 17514 states have internal predecessors, (50207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17515 states to 17515 states and 50207 transitions. [2022-03-03 17:07:28,536 INFO L78 Accepts]: Start accepts. Automaton has 17515 states and 50207 transitions. Word has length 177 [2022-03-03 17:07:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:28,537 INFO L470 AbstractCegarLoop]: Abstraction has 17515 states and 50207 transitions. [2022-03-03 17:07:28,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17515 states and 50207 transitions. [2022-03-03 17:07:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:28,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:28,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:28,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-03 17:07:28,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-03-03 17:07:28,762 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1635958392, now seen corresponding path program 24 times [2022-03-03 17:07:28,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:28,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241022697] [2022-03-03 17:07:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:28,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:29,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:29,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241022697] [2022-03-03 17:07:29,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241022697] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:07:29,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144844289] [2022-03-03 17:07:29,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:07:29,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:29,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:07:29,162 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:07:29,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:07:29,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:07:29,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:07:29,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 17:07:29,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:07:29,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:29,420 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:07:29,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:07:29,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:07:29,951 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:07:29,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:07:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:30,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:07:30,193 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2398 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2398))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select .cse0 c_~get2~0.offset) (select (select .cse1 c_~get1~0.base) c_~get1~0.offset)))))) is different from false [2022-03-03 17:07:30,233 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:07:30,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-03 17:07:30,251 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:30,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-03 17:07:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:30,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144844289] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:07:30,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:07:30,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-03-03 17:07:30,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534240085] [2022-03-03 17:07:30,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:07:30,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:07:30,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:07:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-03-03 17:07:30,835 INFO L87 Difference]: Start difference. First operand 17515 states and 50207 transitions. Second operand has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:32,728 INFO L93 Difference]: Finished difference Result 33229 states and 95744 transitions. [2022-03-03 17:07:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:07:32,729 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:32,797 INFO L225 Difference]: With dead ends: 33229 [2022-03-03 17:07:32,797 INFO L226 Difference]: Without dead ends: 33229 [2022-03-03 17:07:32,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1165, Invalid=4844, Unknown=1, NotChecked=152, Total=6162 [2022-03-03 17:07:32,798 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 2698 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 6816 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 595 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:32,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2698 Valid, 6816 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1771 Invalid, 0 Unknown, 595 Unchecked, 0.7s Time] [2022-03-03 17:07:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33229 states. [2022-03-03 17:07:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33229 to 14419. [2022-03-03 17:07:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 14418 states have (on average 2.8601054237758357) internal successors, (41237), 14418 states have internal predecessors, (41237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 41237 transitions. [2022-03-03 17:07:33,172 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 41237 transitions. Word has length 177 [2022-03-03 17:07:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:33,172 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 41237 transitions. [2022-03-03 17:07:33,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 41237 transitions. [2022-03-03 17:07:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:33,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:33,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:33,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 17:07:33,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-03 17:07:33,394 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:33,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -480864666, now seen corresponding path program 23 times [2022-03-03 17:07:33,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:33,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326366086] [2022-03-03 17:07:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:33,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:33,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326366086] [2022-03-03 17:07:33,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326366086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:33,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:33,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:07:33,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79520375] [2022-03-03 17:07:33,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:33,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:07:33,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:33,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:07:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:07:33,932 INFO L87 Difference]: Start difference. First operand 14419 states and 41237 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:35,095 INFO L93 Difference]: Finished difference Result 27765 states and 79817 transitions. [2022-03-03 17:07:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:07:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:35,152 INFO L225 Difference]: With dead ends: 27765 [2022-03-03 17:07:35,152 INFO L226 Difference]: Without dead ends: 27765 [2022-03-03 17:07:35,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:07:35,152 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1599 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:35,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 3584 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27765 states. [2022-03-03 17:07:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27765 to 14419. [2022-03-03 17:07:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 14418 states have (on average 2.8601054237758357) internal successors, (41237), 14418 states have internal predecessors, (41237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 41237 transitions. [2022-03-03 17:07:35,463 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 41237 transitions. Word has length 177 [2022-03-03 17:07:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:35,463 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 41237 transitions. [2022-03-03 17:07:35,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 41237 transitions. [2022-03-03 17:07:35,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:35,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:35,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:35,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-03 17:07:35,486 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -643153592, now seen corresponding path program 24 times [2022-03-03 17:07:35,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:35,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905077131] [2022-03-03 17:07:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:35,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:35,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:35,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905077131] [2022-03-03 17:07:35,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905077131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:35,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:35,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:07:35,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993054531] [2022-03-03 17:07:35,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:35,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:07:35,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:07:35,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:07:35,955 INFO L87 Difference]: Start difference. First operand 14419 states and 41237 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:36,922 INFO L93 Difference]: Finished difference Result 24104 states and 69548 transitions. [2022-03-03 17:07:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:07:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:36,970 INFO L225 Difference]: With dead ends: 24104 [2022-03-03 17:07:36,970 INFO L226 Difference]: Without dead ends: 24104 [2022-03-03 17:07:36,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:07:36,971 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1317 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:36,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 3532 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24104 states. [2022-03-03 17:07:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24104 to 14427. [2022-03-03 17:07:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14427 states, 14426 states have (on average 2.86059891861916) internal successors, (41267), 14426 states have internal predecessors, (41267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14427 states to 14427 states and 41267 transitions. [2022-03-03 17:07:37,270 INFO L78 Accepts]: Start accepts. Automaton has 14427 states and 41267 transitions. Word has length 177 [2022-03-03 17:07:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:37,270 INFO L470 AbstractCegarLoop]: Abstraction has 14427 states and 41267 transitions. [2022-03-03 17:07:37,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 14427 states and 41267 transitions. [2022-03-03 17:07:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:37,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:37,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:37,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-03 17:07:37,293 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash 184108908, now seen corresponding path program 31 times [2022-03-03 17:07:37,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:37,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634928826] [2022-03-03 17:07:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:37,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:37,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634928826] [2022-03-03 17:07:37,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634928826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:37,729 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:37,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:37,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681327752] [2022-03-03 17:07:37,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:37,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:37,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:37,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:37,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:37,730 INFO L87 Difference]: Start difference. First operand 14427 states and 41267 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:38,604 INFO L93 Difference]: Finished difference Result 23636 states and 68154 transitions. [2022-03-03 17:07:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:07:38,604 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:38,649 INFO L225 Difference]: With dead ends: 23636 [2022-03-03 17:07:38,649 INFO L226 Difference]: Without dead ends: 23636 [2022-03-03 17:07:38,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=1689, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:07:38,650 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1168 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:38,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 3198 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23636 states. [2022-03-03 17:07:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23636 to 14459. [2022-03-03 17:07:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14459 states, 14458 states have (on average 2.860354129201826) internal successors, (41355), 14458 states have internal predecessors, (41355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14459 states to 14459 states and 41355 transitions. [2022-03-03 17:07:38,964 INFO L78 Accepts]: Start accepts. Automaton has 14459 states and 41355 transitions. Word has length 177 [2022-03-03 17:07:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:38,964 INFO L470 AbstractCegarLoop]: Abstraction has 14459 states and 41355 transitions. [2022-03-03 17:07:38,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14459 states and 41355 transitions. [2022-03-03 17:07:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:38,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:38,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:38,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-03 17:07:38,986 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1712752536, now seen corresponding path program 32 times [2022-03-03 17:07:38,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:38,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315297274] [2022-03-03 17:07:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:39,521 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:39,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315297274] [2022-03-03 17:07:39,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315297274] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:07:39,521 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460491311] [2022-03-03 17:07:39,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:07:39,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:07:39,522 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:07:39,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 17:07:39,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:07:39,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:07:39,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-03 17:07:39,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:07:39,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:39,768 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:07:39,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:07:40,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:07:40,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:40,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-03 17:07:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:40,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:07:40,668 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2480 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2480))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (<= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (< (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|))))) is different from false [2022-03-03 17:07:40,716 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:07:40,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-03 17:07:40,736 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:40,736 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-03 17:07:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:41,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460491311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:07:41,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:07:41,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-03 17:07:41,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151612808] [2022-03-03 17:07:41,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:07:41,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 17:07:41,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:41,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 17:07:41,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1469, Unknown=1, NotChecked=78, Total=1722 [2022-03-03 17:07:41,454 INFO L87 Difference]: Start difference. First operand 14459 states and 41355 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:43,882 INFO L93 Difference]: Finished difference Result 39442 states and 113945 transitions. [2022-03-03 17:07:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:07:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:43,968 INFO L225 Difference]: With dead ends: 39442 [2022-03-03 17:07:43,969 INFO L226 Difference]: Without dead ends: 39442 [2022-03-03 17:07:43,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1505, Invalid=6330, Unknown=1, NotChecked=174, Total=8010 [2022-03-03 17:07:43,970 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2213 mSDsluCounter, 8184 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 8561 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 890 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:43,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2213 Valid, 8561 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2078 Invalid, 0 Unknown, 890 Unchecked, 0.8s Time] [2022-03-03 17:07:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39442 states. [2022-03-03 17:07:44,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39442 to 15871. [2022-03-03 17:07:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15871 states, 15870 states have (on average 2.877441713925646) internal successors, (45665), 15870 states have internal predecessors, (45665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15871 states to 15871 states and 45665 transitions. [2022-03-03 17:07:44,417 INFO L78 Accepts]: Start accepts. Automaton has 15871 states and 45665 transitions. Word has length 177 [2022-03-03 17:07:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:44,418 INFO L470 AbstractCegarLoop]: Abstraction has 15871 states and 45665 transitions. [2022-03-03 17:07:44,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 15871 states and 45665 transitions. [2022-03-03 17:07:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:44,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:44,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:44,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-03 17:07:44,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:44,642 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1955471522, now seen corresponding path program 25 times [2022-03-03 17:07:44,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:44,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237640978] [2022-03-03 17:07:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:44,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:45,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:45,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237640978] [2022-03-03 17:07:45,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237640978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:45,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:45,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:07:45,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525045917] [2022-03-03 17:07:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:45,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:07:45,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:07:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:07:45,137 INFO L87 Difference]: Start difference. First operand 15871 states and 45665 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:45,986 INFO L93 Difference]: Finished difference Result 25244 states and 72978 transitions. [2022-03-03 17:07:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:07:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:46,045 INFO L225 Difference]: With dead ends: 25244 [2022-03-03 17:07:46,045 INFO L226 Difference]: Without dead ends: 25244 [2022-03-03 17:07:46,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:07:46,046 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1145 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:46,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 3393 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25244 states. [2022-03-03 17:07:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25244 to 15887. [2022-03-03 17:07:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15887 states, 15886 states have (on average 2.877816945738386) internal successors, (45717), 15886 states have internal predecessors, (45717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15887 states to 15887 states and 45717 transitions. [2022-03-03 17:07:46,452 INFO L78 Accepts]: Start accepts. Automaton has 15887 states and 45717 transitions. Word has length 177 [2022-03-03 17:07:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:46,452 INFO L470 AbstractCegarLoop]: Abstraction has 15887 states and 45717 transitions. [2022-03-03 17:07:46,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15887 states and 45717 transitions. [2022-03-03 17:07:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:46,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:46,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:46,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-03 17:07:46,476 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:46,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1767591432, now seen corresponding path program 25 times [2022-03-03 17:07:46,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:46,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953365035] [2022-03-03 17:07:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:46,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:46,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:46,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953365035] [2022-03-03 17:07:46,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953365035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:46,910 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:46,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:46,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620265707] [2022-03-03 17:07:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:46,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:46,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:46,911 INFO L87 Difference]: Start difference. First operand 15887 states and 45717 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:47,777 INFO L93 Difference]: Finished difference Result 24684 states and 71162 transitions. [2022-03-03 17:07:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:07:47,777 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:47,828 INFO L225 Difference]: With dead ends: 24684 [2022-03-03 17:07:47,828 INFO L226 Difference]: Without dead ends: 24684 [2022-03-03 17:07:47,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:07:47,829 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1112 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:47,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 3627 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24684 states. [2022-03-03 17:07:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24684 to 15451. [2022-03-03 17:07:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15451 states, 15450 states have (on average 2.8645307443365695) internal successors, (44257), 15450 states have internal predecessors, (44257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15451 states to 15451 states and 44257 transitions. [2022-03-03 17:07:48,148 INFO L78 Accepts]: Start accepts. Automaton has 15451 states and 44257 transitions. Word has length 177 [2022-03-03 17:07:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 15451 states and 44257 transitions. [2022-03-03 17:07:48,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 15451 states and 44257 transitions. [2022-03-03 17:07:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:48,171 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:48,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:48,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-03 17:07:48,171 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1131634966, now seen corresponding path program 33 times [2022-03-03 17:07:48,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:48,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309792072] [2022-03-03 17:07:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:48,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:48,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309792072] [2022-03-03 17:07:48,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309792072] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:48,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:48,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:07:48,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75586415] [2022-03-03 17:07:48,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:48,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:07:48,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:07:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:07:48,630 INFO L87 Difference]: Start difference. First operand 15451 states and 44257 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:49,555 INFO L93 Difference]: Finished difference Result 22732 states and 65502 transitions. [2022-03-03 17:07:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:07:49,556 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:49,599 INFO L225 Difference]: With dead ends: 22732 [2022-03-03 17:07:49,600 INFO L226 Difference]: Without dead ends: 22732 [2022-03-03 17:07:49,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=497, Invalid=1759, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:07:49,600 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1555 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:49,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 2982 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2022-03-03 17:07:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 14523. [2022-03-03 17:07:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14523 states, 14522 states have (on average 2.8642748932653905) internal successors, (41595), 14522 states have internal predecessors, (41595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14523 states to 14523 states and 41595 transitions. [2022-03-03 17:07:49,903 INFO L78 Accepts]: Start accepts. Automaton has 14523 states and 41595 transitions. Word has length 177 [2022-03-03 17:07:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:49,903 INFO L470 AbstractCegarLoop]: Abstraction has 14523 states and 41595 transitions. [2022-03-03 17:07:49,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 14523 states and 41595 transitions. [2022-03-03 17:07:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:49,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:49,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:49,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-03 17:07:49,934 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash -668060224, now seen corresponding path program 19 times [2022-03-03 17:07:49,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:49,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630721662] [2022-03-03 17:07:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:50,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:50,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630721662] [2022-03-03 17:07:50,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630721662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:07:50,386 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:07:50,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:07:50,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918132254] [2022-03-03 17:07:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:07:50,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:07:50,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:07:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:07:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:07:50,387 INFO L87 Difference]: Start difference. First operand 14523 states and 41595 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:07:51,355 INFO L93 Difference]: Finished difference Result 22972 states and 66162 transitions. [2022-03-03 17:07:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:07:51,355 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:07:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:07:51,398 INFO L225 Difference]: With dead ends: 22972 [2022-03-03 17:07:51,398 INFO L226 Difference]: Without dead ends: 22972 [2022-03-03 17:07:51,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=491, Invalid=1671, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:07:51,398 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1325 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:07:51,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 3222 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:07:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22972 states. [2022-03-03 17:07:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22972 to 14457. [2022-03-03 17:07:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14456 states have (on average 2.860334809075816) internal successors, (41349), 14456 states have internal predecessors, (41349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 41349 transitions. [2022-03-03 17:07:51,671 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 41349 transitions. Word has length 177 [2022-03-03 17:07:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:07:51,671 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 41349 transitions. [2022-03-03 17:07:51,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:07:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 41349 transitions. [2022-03-03 17:07:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:07:51,695 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:07:51,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:07:51,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-03 17:07:51,696 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:07:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:07:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash -345015716, now seen corresponding path program 34 times [2022-03-03 17:07:51,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:07:51,696 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231301013] [2022-03-03 17:07:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:07:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:07:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:07:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:07:52,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:07:52,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231301013] [2022-03-03 17:07:52,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231301013] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:07:52,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917215816] [2022-03-03 17:07:52,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:07:52,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:07:52,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:07:52,218 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:07:52,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 17:07:52,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:07:52,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:07:52,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-03 17:07:52,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:07:52,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:52,628 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:07:52,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:07:53,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:07:53,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:07:53,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:07:53,877 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:07:53,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-03 17:07:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:07:53,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:07:54,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:54,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2022-03-03 17:07:54,911 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-03 17:07:54,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 851 treesize of output 739 [2022-03-03 17:07:54,925 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:54,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 739 treesize of output 667 [2022-03-03 17:07:54,936 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:07:54,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 659 treesize of output 611 [2022-03-03 17:08:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:08:00,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917215816] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:08:00,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:08:00,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 24] total 69 [2022-03-03 17:08:00,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511566962] [2022-03-03 17:08:00,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:08:00,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:08:00,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:08:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=4136, Unknown=123, NotChecked=0, Total=4692 [2022-03-03 17:08:00,068 INFO L87 Difference]: Start difference. First operand 14457 states and 41349 transitions. Second operand has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:18,804 INFO L93 Difference]: Finished difference Result 80843 states and 231171 transitions. [2022-03-03 17:08:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-03 17:08:18,804 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:18,989 INFO L225 Difference]: With dead ends: 80843 [2022-03-03 17:08:18,989 INFO L226 Difference]: Without dead ends: 80843 [2022-03-03 17:08:18,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 311 SyntacticMatches, 24 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 12816 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=8117, Invalid=30372, Unknown=123, NotChecked=0, Total=38612 [2022-03-03 17:08:18,991 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 5481 mSDsluCounter, 20147 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 20290 SdHoareTripleChecker+Invalid, 8540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3856 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:18,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 20290 Invalid, 8540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4629 Invalid, 0 Unknown, 3856 Unchecked, 2.1s Time] [2022-03-03 17:08:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80843 states. [2022-03-03 17:08:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80843 to 18715. [2022-03-03 17:08:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18715 states, 18714 states have (on average 2.889868547611414) internal successors, (54081), 18714 states have internal predecessors, (54081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18715 states to 18715 states and 54081 transitions. [2022-03-03 17:08:19,964 INFO L78 Accepts]: Start accepts. Automaton has 18715 states and 54081 transitions. Word has length 177 [2022-03-03 17:08:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:19,964 INFO L470 AbstractCegarLoop]: Abstraction has 18715 states and 54081 transitions. [2022-03-03 17:08:19,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 18715 states and 54081 transitions. [2022-03-03 17:08:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:19,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:19,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:20,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 17:08:20,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-03 17:08:20,192 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1276711498, now seen corresponding path program 26 times [2022-03-03 17:08:20,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:20,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827795378] [2022-03-03 17:08:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:20,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:20,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827795378] [2022-03-03 17:08:20,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827795378] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:20,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:20,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:08:20,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342372284] [2022-03-03 17:08:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:20,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:08:20,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:08:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:08:20,626 INFO L87 Difference]: Start difference. First operand 18715 states and 54081 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:21,775 INFO L93 Difference]: Finished difference Result 32931 states and 94897 transitions. [2022-03-03 17:08:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:08:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:21,846 INFO L225 Difference]: With dead ends: 32931 [2022-03-03 17:08:21,846 INFO L226 Difference]: Without dead ends: 32931 [2022-03-03 17:08:21,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:08:21,847 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1430 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:21,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 4007 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:08:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32931 states. [2022-03-03 17:08:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32931 to 18715. [2022-03-03 17:08:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18715 states, 18714 states have (on average 2.889868547611414) internal successors, (54081), 18714 states have internal predecessors, (54081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18715 states to 18715 states and 54081 transitions. [2022-03-03 17:08:22,248 INFO L78 Accepts]: Start accepts. Automaton has 18715 states and 54081 transitions. Word has length 177 [2022-03-03 17:08:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:22,249 INFO L470 AbstractCegarLoop]: Abstraction has 18715 states and 54081 transitions. [2022-03-03 17:08:22,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 18715 states and 54081 transitions. [2022-03-03 17:08:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:22,275 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:22,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:22,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-03 17:08:22,276 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:22,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1439000424, now seen corresponding path program 27 times [2022-03-03 17:08:22,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:22,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255032705] [2022-03-03 17:08:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:22,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:22,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255032705] [2022-03-03 17:08:22,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255032705] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:22,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:22,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:08:22,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479053619] [2022-03-03 17:08:22,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:22,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:08:22,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:08:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:08:22,725 INFO L87 Difference]: Start difference. First operand 18715 states and 54081 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:23,768 INFO L93 Difference]: Finished difference Result 29598 states and 85618 transitions. [2022-03-03 17:08:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:08:23,768 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:23,830 INFO L225 Difference]: With dead ends: 29598 [2022-03-03 17:08:23,830 INFO L226 Difference]: Without dead ends: 29598 [2022-03-03 17:08:23,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:08:23,831 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1279 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:23,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3453 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29598 states. [2022-03-03 17:08:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29598 to 18723. [2022-03-03 17:08:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18723 states, 18722 states have (on average 2.89023608588826) internal successors, (54111), 18722 states have internal predecessors, (54111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18723 states to 18723 states and 54111 transitions. [2022-03-03 17:08:24,784 INFO L78 Accepts]: Start accepts. Automaton has 18723 states and 54111 transitions. Word has length 177 [2022-03-03 17:08:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:24,784 INFO L470 AbstractCegarLoop]: Abstraction has 18723 states and 54111 transitions. [2022-03-03 17:08:24,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:24,784 INFO L276 IsEmpty]: Start isEmpty. Operand 18723 states and 54111 transitions. [2022-03-03 17:08:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:24,812 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:24,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:24,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-03 17:08:24,813 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -611737924, now seen corresponding path program 35 times [2022-03-03 17:08:24,814 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:24,814 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103639994] [2022-03-03 17:08:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:24,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:25,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:25,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103639994] [2022-03-03 17:08:25,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103639994] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:25,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:25,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:08:25,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994644578] [2022-03-03 17:08:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:25,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:08:25,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:08:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:08:25,245 INFO L87 Difference]: Start difference. First operand 18723 states and 54111 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:26,293 INFO L93 Difference]: Finished difference Result 28664 states and 82908 transitions. [2022-03-03 17:08:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 17:08:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:26,353 INFO L225 Difference]: With dead ends: 28664 [2022-03-03 17:08:26,353 INFO L226 Difference]: Without dead ends: 28664 [2022-03-03 17:08:26,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:08:26,353 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1254 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:26,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2985 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28664 states. [2022-03-03 17:08:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28664 to 18755. [2022-03-03 17:08:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18755 states, 18754 states have (on average 2.889996800682521) internal successors, (54199), 18754 states have internal predecessors, (54199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 54199 transitions. [2022-03-03 17:08:26,726 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 54199 transitions. Word has length 177 [2022-03-03 17:08:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:26,726 INFO L470 AbstractCegarLoop]: Abstraction has 18755 states and 54199 transitions. [2022-03-03 17:08:26,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 54199 transitions. [2022-03-03 17:08:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:26,753 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:26,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:26,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-03 17:08:26,753 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 916905704, now seen corresponding path program 36 times [2022-03-03 17:08:26,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:26,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877124529] [2022-03-03 17:08:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:27,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:27,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877124529] [2022-03-03 17:08:27,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877124529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:08:27,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920701592] [2022-03-03 17:08:27,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:08:27,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:08:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:08:27,280 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:08:27,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 17:08:27,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:08:27,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:08:27,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-03 17:08:27,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:08:27,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:08:27,529 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:08:27,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:08:27,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:08:28,164 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:08:28,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-03 17:08:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:28,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:08:28,471 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2663 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2663))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (< (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|) (<= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-03 17:08:28,514 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:08:28,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-03 17:08:28,532 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:08:28,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-03 17:08:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:29,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920701592] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:08:29,425 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:08:29,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-03 17:08:29,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915375604] [2022-03-03 17:08:29,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:08:29,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 17:08:29,426 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 17:08:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1494, Unknown=1, NotChecked=78, Total=1722 [2022-03-03 17:08:29,426 INFO L87 Difference]: Start difference. First operand 18755 states and 54199 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:31,717 INFO L93 Difference]: Finished difference Result 31402 states and 90048 transitions. [2022-03-03 17:08:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 17:08:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:31,782 INFO L225 Difference]: With dead ends: 31402 [2022-03-03 17:08:31,782 INFO L226 Difference]: Without dead ends: 31402 [2022-03-03 17:08:31,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 346 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1299, Invalid=6014, Unknown=1, NotChecked=168, Total=7482 [2022-03-03 17:08:31,783 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 2136 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 882 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:31,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 6731 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1711 Invalid, 0 Unknown, 882 Unchecked, 0.7s Time] [2022-03-03 17:08:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31402 states. [2022-03-03 17:08:32,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31402 to 19627. [2022-03-03 17:08:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19627 states, 19626 states have (on average 2.8935595638438807) internal successors, (56789), 19626 states have internal predecessors, (56789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19627 states to 19627 states and 56789 transitions. [2022-03-03 17:08:32,206 INFO L78 Accepts]: Start accepts. Automaton has 19627 states and 56789 transitions. Word has length 177 [2022-03-03 17:08:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:32,206 INFO L470 AbstractCegarLoop]: Abstraction has 19627 states and 56789 transitions. [2022-03-03 17:08:32,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 19627 states and 56789 transitions. [2022-03-03 17:08:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:32,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:32,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:32,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-03 17:08:32,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-03 17:08:32,438 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1159624690, now seen corresponding path program 28 times [2022-03-03 17:08:32,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:32,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755360349] [2022-03-03 17:08:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:32,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:32,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:32,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755360349] [2022-03-03 17:08:32,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755360349] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:32,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:32,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:08:32,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551017874] [2022-03-03 17:08:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:32,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:08:32,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:08:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:08:32,970 INFO L87 Difference]: Start difference. First operand 19627 states and 56789 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:34,025 INFO L93 Difference]: Finished difference Result 29886 states and 86430 transitions. [2022-03-03 17:08:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:08:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:34,086 INFO L225 Difference]: With dead ends: 29886 [2022-03-03 17:08:34,086 INFO L226 Difference]: Without dead ends: 29886 [2022-03-03 17:08:34,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:08:34,087 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1139 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:34,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 3369 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:08:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29886 states. [2022-03-03 17:08:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29886 to 19643. [2022-03-03 17:08:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19643 states, 19642 states have (on average 2.8942572039507177) internal successors, (56849), 19642 states have internal predecessors, (56849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19643 states to 19643 states and 56849 transitions. [2022-03-03 17:08:34,470 INFO L78 Accepts]: Start accepts. Automaton has 19643 states and 56849 transitions. Word has length 177 [2022-03-03 17:08:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:34,470 INFO L470 AbstractCegarLoop]: Abstraction has 19643 states and 56849 transitions. [2022-03-03 17:08:34,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 19643 states and 56849 transitions. [2022-03-03 17:08:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:34,498 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:34,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:34,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-03 17:08:34,498 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1445824888, now seen corresponding path program 37 times [2022-03-03 17:08:34,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:34,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108571398] [2022-03-03 17:08:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:34,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:34,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108571398] [2022-03-03 17:08:34,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108571398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:34,938 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:34,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:08:34,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465925967] [2022-03-03 17:08:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:34,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:08:34,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:08:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:08:34,939 INFO L87 Difference]: Start difference. First operand 19643 states and 56849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:35,906 INFO L93 Difference]: Finished difference Result 29396 states and 85042 transitions. [2022-03-03 17:08:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:08:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:35,970 INFO L225 Difference]: With dead ends: 29396 [2022-03-03 17:08:35,970 INFO L226 Difference]: Without dead ends: 29396 [2022-03-03 17:08:35,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:08:35,971 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1140 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:35,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2949 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:08:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29396 states. [2022-03-03 17:08:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29396 to 19651. [2022-03-03 17:08:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19651 states, 19650 states have (on average 2.894198473282443) internal successors, (56871), 19650 states have internal predecessors, (56871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19651 states to 19651 states and 56871 transitions. [2022-03-03 17:08:36,359 INFO L78 Accepts]: Start accepts. Automaton has 19651 states and 56871 transitions. Word has length 177 [2022-03-03 17:08:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:36,360 INFO L470 AbstractCegarLoop]: Abstraction has 19651 states and 56871 transitions. [2022-03-03 17:08:36,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 19651 states and 56871 transitions. [2022-03-03 17:08:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:36,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:36,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:36,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-03 17:08:36,390 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1927481798, now seen corresponding path program 38 times [2022-03-03 17:08:36,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:36,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114055655] [2022-03-03 17:08:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:36,886 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:36,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114055655] [2022-03-03 17:08:36,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114055655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:36,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:36,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:08:36,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373287108] [2022-03-03 17:08:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:36,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:08:36,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:08:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:08:36,888 INFO L87 Difference]: Start difference. First operand 19651 states and 56871 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:37,846 INFO L93 Difference]: Finished difference Result 28870 states and 83552 transitions. [2022-03-03 17:08:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:08:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:37,906 INFO L225 Difference]: With dead ends: 28870 [2022-03-03 17:08:37,906 INFO L226 Difference]: Without dead ends: 28870 [2022-03-03 17:08:37,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:08:37,906 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1360 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:37,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1360 Valid, 2943 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28870 states. [2022-03-03 17:08:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28870 to 19643. [2022-03-03 17:08:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19643 states, 19642 states have (on average 2.8942572039507177) internal successors, (56849), 19642 states have internal predecessors, (56849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19643 states to 19643 states and 56849 transitions. [2022-03-03 17:08:38,435 INFO L78 Accepts]: Start accepts. Automaton has 19643 states and 56849 transitions. Word has length 177 [2022-03-03 17:08:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:38,435 INFO L470 AbstractCegarLoop]: Abstraction has 19643 states and 56849 transitions. [2022-03-03 17:08:38,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 19643 states and 56849 transitions. [2022-03-03 17:08:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:38,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:38,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:38,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-03 17:08:38,464 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907056, now seen corresponding path program 20 times [2022-03-03 17:08:38,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:38,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152339374] [2022-03-03 17:08:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:38,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:38,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152339374] [2022-03-03 17:08:38,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152339374] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:38,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:38,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:08:38,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874303513] [2022-03-03 17:08:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:38,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:08:38,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:08:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:08:38,927 INFO L87 Difference]: Start difference. First operand 19643 states and 56849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:39,897 INFO L93 Difference]: Finished difference Result 28944 states and 83786 transitions. [2022-03-03 17:08:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:08:39,897 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:39,957 INFO L225 Difference]: With dead ends: 28944 [2022-03-03 17:08:39,958 INFO L226 Difference]: Without dead ends: 28944 [2022-03-03 17:08:39,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:08:39,958 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1161 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:39,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 3341 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28944 states. [2022-03-03 17:08:40,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28944 to 19603. [2022-03-03 17:08:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19603 states, 19602 states have (on average 2.892612998673605) internal successors, (56701), 19602 states have internal predecessors, (56701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19603 states to 19603 states and 56701 transitions. [2022-03-03 17:08:40,444 INFO L78 Accepts]: Start accepts. Automaton has 19603 states and 56701 transitions. Word has length 177 [2022-03-03 17:08:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:40,444 INFO L470 AbstractCegarLoop]: Abstraction has 19603 states and 56701 transitions. [2022-03-03 17:08:40,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 19603 states and 56701 transitions. [2022-03-03 17:08:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:40,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:40,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:40,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-03 17:08:40,473 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -668146084, now seen corresponding path program 26 times [2022-03-03 17:08:40,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:40,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051549267] [2022-03-03 17:08:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:40,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:40,893 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:40,893 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051549267] [2022-03-03 17:08:40,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051549267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:40,893 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:40,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:08:40,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328063612] [2022-03-03 17:08:40,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:40,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:08:40,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:08:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:08:40,894 INFO L87 Difference]: Start difference. First operand 19603 states and 56701 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:41,959 INFO L93 Difference]: Finished difference Result 29958 states and 86552 transitions. [2022-03-03 17:08:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 17:08:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:42,019 INFO L225 Difference]: With dead ends: 29958 [2022-03-03 17:08:42,019 INFO L226 Difference]: Without dead ends: 29958 [2022-03-03 17:08:42,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=581, Invalid=1969, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 17:08:42,020 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1181 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:42,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 3406 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29958 states. [2022-03-03 17:08:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29958 to 19561. [2022-03-03 17:08:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19561 states, 19560 states have (on average 2.892075664621677) internal successors, (56569), 19560 states have internal predecessors, (56569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19561 states to 19561 states and 56569 transitions. [2022-03-03 17:08:42,563 INFO L78 Accepts]: Start accepts. Automaton has 19561 states and 56569 transitions. Word has length 177 [2022-03-03 17:08:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:42,563 INFO L470 AbstractCegarLoop]: Abstraction has 19561 states and 56569 transitions. [2022-03-03 17:08:42,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 19561 states and 56569 transitions. [2022-03-03 17:08:42,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:42,593 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:42,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:42,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-03 17:08:42,594 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1696693896, now seen corresponding path program 27 times [2022-03-03 17:08:42,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:42,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736260090] [2022-03-03 17:08:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:43,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:43,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736260090] [2022-03-03 17:08:43,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736260090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:08:43,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166464409] [2022-03-03 17:08:43,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:08:43,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:08:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:08:43,055 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:08:43,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 17:08:43,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:08:43,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:08:43,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-03 17:08:43,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:08:43,269 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:08:43,321 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:08:43,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:08:43,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:08:43,833 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:08:43,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:08:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:43,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:08:44,089 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2777 (Array Int Int)) (~get2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2777))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))))))) is different from false [2022-03-03 17:08:44,128 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:08:44,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-03 17:08:44,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:08:44,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-03 17:08:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:44,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166464409] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:08:44,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:08:44,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 41 [2022-03-03 17:08:44,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950116834] [2022-03-03 17:08:44,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:08:44,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-03 17:08:44,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:44,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-03 17:08:44,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1397, Unknown=1, NotChecked=76, Total=1640 [2022-03-03 17:08:44,918 INFO L87 Difference]: Start difference. First operand 19561 states and 56569 transitions. Second operand has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:47,096 INFO L93 Difference]: Finished difference Result 37391 states and 107919 transitions. [2022-03-03 17:08:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 17:08:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:47,173 INFO L225 Difference]: With dead ends: 37391 [2022-03-03 17:08:47,174 INFO L226 Difference]: Without dead ends: 37391 [2022-03-03 17:08:47,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1366, Invalid=5609, Unknown=1, NotChecked=164, Total=7140 [2022-03-03 17:08:47,175 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 2500 mSDsluCounter, 7750 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 8044 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 799 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:47,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 8044 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2178 Invalid, 0 Unknown, 799 Unchecked, 0.8s Time] [2022-03-03 17:08:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37391 states. [2022-03-03 17:08:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37391 to 18717. [2022-03-03 17:08:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.888597991023723) internal successors, (54063), 18716 states have internal predecessors, (54063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54063 transitions. [2022-03-03 17:08:47,684 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54063 transitions. Word has length 177 [2022-03-03 17:08:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:47,684 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54063 transitions. [2022-03-03 17:08:47,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54063 transitions. [2022-03-03 17:08:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:47,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:47,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:47,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 17:08:47,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-03 17:08:47,912 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash 100811472, now seen corresponding path program 29 times [2022-03-03 17:08:47,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:47,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521650286] [2022-03-03 17:08:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:47,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:48,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:48,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521650286] [2022-03-03 17:08:48,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521650286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:48,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:48,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:08:48,347 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660129343] [2022-03-03 17:08:48,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:48,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:08:48,347 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:08:48,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:08:48,347 INFO L87 Difference]: Start difference. First operand 18717 states and 54063 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:49,379 INFO L93 Difference]: Finished difference Result 28760 states and 83026 transitions. [2022-03-03 17:08:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:08:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:49,435 INFO L225 Difference]: With dead ends: 28760 [2022-03-03 17:08:49,435 INFO L226 Difference]: Without dead ends: 28760 [2022-03-03 17:08:49,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:08:49,435 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1196 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:49,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3291 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28760 states. [2022-03-03 17:08:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28760 to 18717. [2022-03-03 17:08:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.888597991023723) internal successors, (54063), 18716 states have internal predecessors, (54063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54063 transitions. [2022-03-03 17:08:49,801 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54063 transitions. Word has length 177 [2022-03-03 17:08:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:49,802 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54063 transitions. [2022-03-03 17:08:49,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54063 transitions. [2022-03-03 17:08:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:49,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:49,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:49,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-03 17:08:49,831 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:49,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 928073972, now seen corresponding path program 39 times [2022-03-03 17:08:49,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:49,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25255789] [2022-03-03 17:08:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:50,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:50,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25255789] [2022-03-03 17:08:50,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25255789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:08:50,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:08:50,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:08:50,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880405838] [2022-03-03 17:08:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:08:50,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:08:50,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:08:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:08:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:08:50,255 INFO L87 Difference]: Start difference. First operand 18717 states and 54063 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:08:51,306 INFO L93 Difference]: Finished difference Result 27802 states and 80242 transitions. [2022-03-03 17:08:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:08:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:08:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:08:51,363 INFO L225 Difference]: With dead ends: 27802 [2022-03-03 17:08:51,364 INFO L226 Difference]: Without dead ends: 27802 [2022-03-03 17:08:51,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:08:51,364 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1123 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:08:51,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3080 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:08:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27802 states. [2022-03-03 17:08:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27802 to 18741. [2022-03-03 17:08:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.888740661686233) internal successors, (54135), 18740 states have internal predecessors, (54135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54135 transitions. [2022-03-03 17:08:51,726 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54135 transitions. Word has length 177 [2022-03-03 17:08:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:08:51,726 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54135 transitions. [2022-03-03 17:08:51,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:08:51,726 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54135 transitions. [2022-03-03 17:08:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:08:51,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:08:51,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:08:51,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-03 17:08:51,754 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:08:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:08:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1838249696, now seen corresponding path program 40 times [2022-03-03 17:08:51,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:08:51,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500878207] [2022-03-03 17:08:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:08:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:08:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:08:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:08:52,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:08:52,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500878207] [2022-03-03 17:08:52,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500878207] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:08:52,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792987426] [2022-03-03 17:08:52,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:08:52,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:08:52,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:08:52,166 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:08:52,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 17:08:52,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:08:52,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:08:52,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-03 17:08:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:08:52,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:08:52,597 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:08:52,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:08:53,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:08:53,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:08:53,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:08:53,931 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:08:53,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-03 17:08:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:08:53,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:08:55,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:08:55,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2022-03-03 17:08:55,073 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-03 17:08:55,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1427 treesize of output 1251 [2022-03-03 17:08:55,090 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:08:55,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1251 treesize of output 1115 [2022-03-03 17:08:55,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:08:55,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1027 [2022-03-03 17:09:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:09:05,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792987426] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:09:05,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:09:05,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 24] total 69 [2022-03-03 17:09:05,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557109123] [2022-03-03 17:09:05,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:09:05,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-03 17:09:05,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-03 17:09:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=4212, Unknown=97, NotChecked=0, Total=4692 [2022-03-03 17:09:05,964 INFO L87 Difference]: Start difference. First operand 18741 states and 54135 transitions. Second operand has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:16,429 INFO L93 Difference]: Finished difference Result 62272 states and 179468 transitions. [2022-03-03 17:09:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-03 17:09:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:16,582 INFO L225 Difference]: With dead ends: 62272 [2022-03-03 17:09:16,582 INFO L226 Difference]: Without dead ends: 62272 [2022-03-03 17:09:16,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 310 SyntacticMatches, 17 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 6559 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4553, Invalid=18606, Unknown=97, NotChecked=0, Total=23256 [2022-03-03 17:09:16,584 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 5499 mSDsluCounter, 13622 mSDsCounter, 0 mSdLazyCounter, 4192 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5499 SdHoareTripleChecker+Valid, 13841 SdHoareTripleChecker+Invalid, 5543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1298 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:16,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5499 Valid, 13841 Invalid, 5543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 4192 Invalid, 0 Unknown, 1298 Unchecked, 1.9s Time] [2022-03-03 17:09:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62272 states. [2022-03-03 17:09:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62272 to 19093. [2022-03-03 17:09:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19093 states, 19092 states have (on average 2.8942489000628537) internal successors, (55257), 19092 states have internal predecessors, (55257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19093 states to 19093 states and 55257 transitions. [2022-03-03 17:09:17,261 INFO L78 Accepts]: Start accepts. Automaton has 19093 states and 55257 transitions. Word has length 177 [2022-03-03 17:09:17,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:17,261 INFO L470 AbstractCegarLoop]: Abstraction has 19093 states and 55257 transitions. [2022-03-03 17:09:17,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 19093 states and 55257 transitions. [2022-03-03 17:09:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:17,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:17,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:17,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 17:09:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-03 17:09:17,491 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1595530710, now seen corresponding path program 30 times [2022-03-03 17:09:17,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:17,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667378398] [2022-03-03 17:09:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:18,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:18,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667378398] [2022-03-03 17:09:18,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667378398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:18,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:18,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:18,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133138240] [2022-03-03 17:09:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:18,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:18,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:18,016 INFO L87 Difference]: Start difference. First operand 19093 states and 55257 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:18,954 INFO L93 Difference]: Finished difference Result 28754 states and 83090 transitions. [2022-03-03 17:09:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:18,954 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:18,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:19,014 INFO L225 Difference]: With dead ends: 28754 [2022-03-03 17:09:19,014 INFO L226 Difference]: Without dead ends: 28754 [2022-03-03 17:09:19,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=1697, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:09:19,015 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1129 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:19,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 3096 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:09:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28754 states. [2022-03-03 17:09:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28754 to 19109. [2022-03-03 17:09:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 2.894965459493406) internal successors, (55317), 19108 states have internal predecessors, (55317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 55317 transitions. [2022-03-03 17:09:19,671 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 55317 transitions. Word has length 177 [2022-03-03 17:09:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:19,671 INFO L470 AbstractCegarLoop]: Abstraction has 19109 states and 55317 transitions. [2022-03-03 17:09:19,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 55317 transitions. [2022-03-03 17:09:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:19,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:19,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:19,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-03 17:09:19,701 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1783410800, now seen corresponding path program 28 times [2022-03-03 17:09:19,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:19,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242532268] [2022-03-03 17:09:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:20,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:20,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242532268] [2022-03-03 17:09:20,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242532268] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:20,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:20,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:09:20,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698489450] [2022-03-03 17:09:20,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:20,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:09:20,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:09:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:09:20,342 INFO L87 Difference]: Start difference. First operand 19109 states and 55317 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:21,396 INFO L93 Difference]: Finished difference Result 28234 states and 81614 transitions. [2022-03-03 17:09:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:21,397 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:21,496 INFO L225 Difference]: With dead ends: 28234 [2022-03-03 17:09:21,496 INFO L226 Difference]: Without dead ends: 28234 [2022-03-03 17:09:21,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:09:21,497 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1224 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:21,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 3132 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:09:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28234 states. [2022-03-03 17:09:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28234 to 19117. [2022-03-03 17:09:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19117 states, 19116 states have (on average 2.894904791797447) internal successors, (55339), 19116 states have internal predecessors, (55339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19117 states to 19117 states and 55339 transitions. [2022-03-03 17:09:21,906 INFO L78 Accepts]: Start accepts. Automaton has 19117 states and 55339 transitions. Word has length 177 [2022-03-03 17:09:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:21,907 INFO L470 AbstractCegarLoop]: Abstraction has 19117 states and 55339 transitions. [2022-03-03 17:09:21,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19117 states and 55339 transitions. [2022-03-03 17:09:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:21,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:21,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:21,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-03 17:09:21,935 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -387669902, now seen corresponding path program 41 times [2022-03-03 17:09:21,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:21,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63302312] [2022-03-03 17:09:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:22,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:22,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63302312] [2022-03-03 17:09:22,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63302312] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:22,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:22,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:22,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014408449] [2022-03-03 17:09:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:22,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:22,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:22,440 INFO L87 Difference]: Start difference. First operand 19117 states and 55339 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:23,364 INFO L93 Difference]: Finished difference Result 27610 states and 79860 transitions. [2022-03-03 17:09:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:23,422 INFO L225 Difference]: With dead ends: 27610 [2022-03-03 17:09:23,422 INFO L226 Difference]: Without dead ends: 27610 [2022-03-03 17:09:23,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:09:23,422 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1277 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:23,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 2916 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:09:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-03-03 17:09:23,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 19109. [2022-03-03 17:09:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 2.894965459493406) internal successors, (55317), 19108 states have internal predecessors, (55317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 55317 transitions. [2022-03-03 17:09:23,798 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 55317 transitions. Word has length 177 [2022-03-03 17:09:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:23,798 INFO L470 AbstractCegarLoop]: Abstraction has 19109 states and 55317 transitions. [2022-03-03 17:09:23,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 55317 transitions. [2022-03-03 17:09:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:23,943 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:23,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:23,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-03 17:09:23,944 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 75904840, now seen corresponding path program 21 times [2022-03-03 17:09:23,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:23,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205071965] [2022-03-03 17:09:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:24,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:24,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205071965] [2022-03-03 17:09:24,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205071965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:24,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:24,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:09:24,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076608204] [2022-03-03 17:09:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:24,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:09:24,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:09:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:09:24,396 INFO L87 Difference]: Start difference. First operand 19109 states and 55317 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:25,394 INFO L93 Difference]: Finished difference Result 27826 states and 80486 transitions. [2022-03-03 17:09:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:25,394 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:25,452 INFO L225 Difference]: With dead ends: 27826 [2022-03-03 17:09:25,452 INFO L226 Difference]: Without dead ends: 27826 [2022-03-03 17:09:25,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:09:25,453 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1333 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:25,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 3020 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:09:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27826 states. [2022-03-03 17:09:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27826 to 19085. [2022-03-03 17:09:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 2.8938901697757284) internal successors, (55227), 19084 states have internal predecessors, (55227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 55227 transitions. [2022-03-03 17:09:25,966 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 55227 transitions. Word has length 177 [2022-03-03 17:09:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:25,966 INFO L470 AbstractCegarLoop]: Abstraction has 19085 states and 55227 transitions. [2022-03-03 17:09:25,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 55227 transitions. [2022-03-03 17:09:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:25,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:25,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:25,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-03 17:09:25,994 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 29862778, now seen corresponding path program 31 times [2022-03-03 17:09:25,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:25,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447571736] [2022-03-03 17:09:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:26,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:26,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447571736] [2022-03-03 17:09:26,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447571736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:26,427 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:26,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:26,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246565901] [2022-03-03 17:09:26,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:26,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:26,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:26,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:26,428 INFO L87 Difference]: Start difference. First operand 19085 states and 55227 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:27,388 INFO L93 Difference]: Finished difference Result 28602 states and 82592 transitions. [2022-03-03 17:09:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:09:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:27,448 INFO L225 Difference]: With dead ends: 28602 [2022-03-03 17:09:27,448 INFO L226 Difference]: Without dead ends: 28602 [2022-03-03 17:09:27,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:09:27,448 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1088 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:27,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 3037 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:09:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28602 states. [2022-03-03 17:09:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28602 to 19085. [2022-03-03 17:09:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 2.8934709704464474) internal successors, (55219), 19084 states have internal predecessors, (55219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 55219 transitions. [2022-03-03 17:09:27,890 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 55219 transitions. Word has length 177 [2022-03-03 17:09:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:27,890 INFO L470 AbstractCegarLoop]: Abstraction has 19085 states and 55219 transitions. [2022-03-03 17:09:27,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 55219 transitions. [2022-03-03 17:09:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:27,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:27,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:27,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-03 17:09:27,919 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash -158017312, now seen corresponding path program 29 times [2022-03-03 17:09:27,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:27,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26256388] [2022-03-03 17:09:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:27,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:28,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:28,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26256388] [2022-03-03 17:09:28,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26256388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:28,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:28,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:09:28,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182228341] [2022-03-03 17:09:28,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:28,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:09:28,422 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:09:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:09:28,422 INFO L87 Difference]: Start difference. First operand 19085 states and 55219 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:29,441 INFO L93 Difference]: Finished difference Result 27578 states and 79554 transitions. [2022-03-03 17:09:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:09:29,442 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:29,502 INFO L225 Difference]: With dead ends: 27578 [2022-03-03 17:09:29,502 INFO L226 Difference]: Without dead ends: 27578 [2022-03-03 17:09:29,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:09:29,502 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1189 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:29,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 2814 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:09:29,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27578 states. [2022-03-03 17:09:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27578 to 18741. [2022-03-03 17:09:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.8879935965848453) internal successors, (54121), 18740 states have internal predecessors, (54121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54121 transitions. [2022-03-03 17:09:29,952 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54121 transitions. Word has length 177 [2022-03-03 17:09:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:29,953 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54121 transitions. [2022-03-03 17:09:29,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54121 transitions. [2022-03-03 17:09:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:29,981 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:29,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:29,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-03 17:09:29,981 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:29,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1237723586, now seen corresponding path program 42 times [2022-03-03 17:09:29,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:29,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030671867] [2022-03-03 17:09:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:30,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:30,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030671867] [2022-03-03 17:09:30,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030671867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:30,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:30,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:30,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855173979] [2022-03-03 17:09:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:30,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:30,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:30,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:30,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:30,421 INFO L87 Difference]: Start difference. First operand 18741 states and 54121 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:31,503 INFO L93 Difference]: Finished difference Result 26978 states and 77866 transitions. [2022-03-03 17:09:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:31,503 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:31,559 INFO L225 Difference]: With dead ends: 26978 [2022-03-03 17:09:31,559 INFO L226 Difference]: Without dead ends: 26978 [2022-03-03 17:09:31,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:09:31,560 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1225 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:31,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 3450 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:09:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26978 states. [2022-03-03 17:09:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26978 to 18741. [2022-03-03 17:09:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.8879935965848453) internal successors, (54121), 18740 states have internal predecessors, (54121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54121 transitions. [2022-03-03 17:09:32,014 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54121 transitions. Word has length 177 [2022-03-03 17:09:32,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:32,014 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54121 transitions. [2022-03-03 17:09:32,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54121 transitions. [2022-03-03 17:09:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:32,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:32,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:32,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-03 17:09:32,046 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1701298328, now seen corresponding path program 22 times [2022-03-03 17:09:32,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:32,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305539789] [2022-03-03 17:09:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:32,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:32,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:32,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305539789] [2022-03-03 17:09:32,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305539789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:32,478 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:32,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:09:32,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582245330] [2022-03-03 17:09:32,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:32,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:09:32,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:09:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:09:32,479 INFO L87 Difference]: Start difference. First operand 18741 states and 54121 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:33,498 INFO L93 Difference]: Finished difference Result 27202 states and 78514 transitions. [2022-03-03 17:09:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:33,498 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:33,555 INFO L225 Difference]: With dead ends: 27202 [2022-03-03 17:09:33,555 INFO L226 Difference]: Without dead ends: 27202 [2022-03-03 17:09:33,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1604, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:09:33,556 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1090 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:33,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 3137 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:09:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27202 states. [2022-03-03 17:09:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27202 to 18733. [2022-03-03 17:09:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18732 states have (on average 2.887198377108691) internal successors, (54083), 18732 states have internal predecessors, (54083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 54083 transitions. [2022-03-03 17:09:33,958 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 54083 transitions. Word has length 177 [2022-03-03 17:09:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:33,958 INFO L470 AbstractCegarLoop]: Abstraction has 18733 states and 54083 transitions. [2022-03-03 17:09:33,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 54083 transitions. [2022-03-03 17:09:33,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:33,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:33,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:33,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-03 17:09:33,987 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash 981087844, now seen corresponding path program 43 times [2022-03-03 17:09:33,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:33,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046405870] [2022-03-03 17:09:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:33,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:34,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:34,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046405870] [2022-03-03 17:09:34,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046405870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:34,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:34,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:34,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677522499] [2022-03-03 17:09:34,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:34,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:34,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:34,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:34,544 INFO L87 Difference]: Start difference. First operand 18733 states and 54083 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:35,576 INFO L93 Difference]: Finished difference Result 26890 states and 77576 transitions. [2022-03-03 17:09:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:09:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:35,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:35,633 INFO L225 Difference]: With dead ends: 26890 [2022-03-03 17:09:35,633 INFO L226 Difference]: Without dead ends: 26890 [2022-03-03 17:09:35,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:09:35,634 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1239 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:35,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 3453 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:09:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26890 states. [2022-03-03 17:09:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26890 to 18717. [2022-03-03 17:09:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.8873156657405428) internal successors, (54039), 18716 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54039 transitions. [2022-03-03 17:09:36,063 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54039 transitions. Word has length 177 [2022-03-03 17:09:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:36,063 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54039 transitions. [2022-03-03 17:09:36,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54039 transitions. [2022-03-03 17:09:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:36,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:36,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:36,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-03 17:09:36,091 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1275970236, now seen corresponding path program 23 times [2022-03-03 17:09:36,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:36,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455433074] [2022-03-03 17:09:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:36,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:36,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455433074] [2022-03-03 17:09:36,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455433074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:36,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:36,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:09:36,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168559951] [2022-03-03 17:09:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:36,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:09:36,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:09:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:09:36,545 INFO L87 Difference]: Start difference. First operand 18717 states and 54039 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:37,632 INFO L93 Difference]: Finished difference Result 26970 states and 77820 transitions. [2022-03-03 17:09:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:09:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:37,686 INFO L225 Difference]: With dead ends: 26970 [2022-03-03 17:09:37,686 INFO L226 Difference]: Without dead ends: 26970 [2022-03-03 17:09:37,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=518, Invalid=1738, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:09:37,687 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1228 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:37,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 3614 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:09:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26970 states. [2022-03-03 17:09:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26970 to 18733. [2022-03-03 17:09:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18732 states have (on average 2.887198377108691) internal successors, (54083), 18732 states have internal predecessors, (54083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 54083 transitions. [2022-03-03 17:09:38,040 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 54083 transitions. Word has length 177 [2022-03-03 17:09:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:38,040 INFO L470 AbstractCegarLoop]: Abstraction has 18733 states and 54083 transitions. [2022-03-03 17:09:38,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 54083 transitions. [2022-03-03 17:09:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:38,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:38,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-03 17:09:38,071 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash -818393186, now seen corresponding path program 24 times [2022-03-03 17:09:38,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:38,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049228602] [2022-03-03 17:09:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:38,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:38,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:38,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049228602] [2022-03-03 17:09:38,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049228602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:38,586 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:38,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:09:38,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30142599] [2022-03-03 17:09:38,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:38,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:09:38,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:38,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:09:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:09:38,587 INFO L87 Difference]: Start difference. First operand 18733 states and 54083 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:39,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:39,616 INFO L93 Difference]: Finished difference Result 27586 states and 79586 transitions. [2022-03-03 17:09:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:09:39,616 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:39,676 INFO L225 Difference]: With dead ends: 27586 [2022-03-03 17:09:39,676 INFO L226 Difference]: Without dead ends: 27586 [2022-03-03 17:09:39,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:09:39,677 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1116 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:39,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 3281 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:09:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27586 states. [2022-03-03 17:09:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27586 to 18459. [2022-03-03 17:09:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18459 states, 18458 states have (on average 2.887907682305775) internal successors, (53305), 18458 states have internal predecessors, (53305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18459 states to 18459 states and 53305 transitions. [2022-03-03 17:09:40,133 INFO L78 Accepts]: Start accepts. Automaton has 18459 states and 53305 transitions. Word has length 177 [2022-03-03 17:09:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:40,133 INFO L470 AbstractCegarLoop]: Abstraction has 18459 states and 53305 transitions. [2022-03-03 17:09:40,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 18459 states and 53305 transitions. [2022-03-03 17:09:40,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:40,162 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:40,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:40,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-03 17:09:40,162 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1065664872, now seen corresponding path program 44 times [2022-03-03 17:09:40,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:40,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511666980] [2022-03-03 17:09:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:40,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:40,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511666980] [2022-03-03 17:09:40,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511666980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:09:40,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340919593] [2022-03-03 17:09:40,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:09:40,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:09:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:09:40,600 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:09:40,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 17:09:40,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:09:40,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:09:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-03 17:09:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:09:40,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:09:40,862 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:09:40,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:09:41,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:09:41,491 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:09:41,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-03 17:09:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:41,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:09:41,794 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3056 (Array Int Int)) (~get2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3056))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (< (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|) (<= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-03 17:09:41,843 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:09:41,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-03 17:09:41,860 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:09:41,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-03 17:09:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:42,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340919593] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:09:42,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:09:42,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-03 17:09:42,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980852183] [2022-03-03 17:09:42,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:09:42,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-03 17:09:42,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-03 17:09:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1467, Unknown=1, NotChecked=78, Total=1722 [2022-03-03 17:09:42,931 INFO L87 Difference]: Start difference. First operand 18459 states and 53305 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:45,090 INFO L93 Difference]: Finished difference Result 31428 states and 90352 transitions. [2022-03-03 17:09:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 17:09:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:45,158 INFO L225 Difference]: With dead ends: 31428 [2022-03-03 17:09:45,158 INFO L226 Difference]: Without dead ends: 31428 [2022-03-03 17:09:45,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1335, Invalid=5640, Unknown=1, NotChecked=164, Total=7140 [2022-03-03 17:09:45,160 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 2332 mSDsluCounter, 5436 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 5746 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 777 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:45,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 5746 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1864 Invalid, 0 Unknown, 777 Unchecked, 0.8s Time] [2022-03-03 17:09:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2022-03-03 17:09:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 18409. [2022-03-03 17:09:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18409 states, 18408 states have (on average 2.8883637548891787) internal successors, (53169), 18408 states have internal predecessors, (53169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 53169 transitions. [2022-03-03 17:09:45,634 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 53169 transitions. Word has length 177 [2022-03-03 17:09:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:45,634 INFO L470 AbstractCegarLoop]: Abstraction has 18409 states and 53169 transitions. [2022-03-03 17:09:45,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 53169 transitions. [2022-03-03 17:09:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:45,664 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:45,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:45,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 17:09:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-03-03 17:09:45,865 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash 99296670, now seen corresponding path program 32 times [2022-03-03 17:09:45,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:45,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224838586] [2022-03-03 17:09:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:46,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:46,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224838586] [2022-03-03 17:09:46,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224838586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:46,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:46,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:46,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926963742] [2022-03-03 17:09:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:46,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:46,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:46,402 INFO L87 Difference]: Start difference. First operand 18409 states and 53169 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:47,558 INFO L93 Difference]: Finished difference Result 28669 states and 82379 transitions. [2022-03-03 17:09:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-03 17:09:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:47,617 INFO L225 Difference]: With dead ends: 28669 [2022-03-03 17:09:47,617 INFO L226 Difference]: Without dead ends: 28669 [2022-03-03 17:09:47,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=440, Invalid=1722, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:09:47,618 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1403 mSDsluCounter, 4447 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 4763 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:47,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 4763 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:09:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28669 states. [2022-03-03 17:09:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28669 to 18471. [2022-03-03 17:09:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18471 states, 18470 states have (on average 2.8829994585814833) internal successors, (53249), 18470 states have internal predecessors, (53249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18471 states to 18471 states and 53249 transitions. [2022-03-03 17:09:48,057 INFO L78 Accepts]: Start accepts. Automaton has 18471 states and 53249 transitions. Word has length 177 [2022-03-03 17:09:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:48,057 INFO L470 AbstractCegarLoop]: Abstraction has 18471 states and 53249 transitions. [2022-03-03 17:09:48,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 18471 states and 53249 transitions. [2022-03-03 17:09:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:48,085 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:48,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:48,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-03 17:09:48,085 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash 719692692, now seen corresponding path program 45 times [2022-03-03 17:09:48,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:48,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286325201] [2022-03-03 17:09:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:48,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:48,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286325201] [2022-03-03 17:09:48,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286325201] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:09:48,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:09:48,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:09:48,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458511260] [2022-03-03 17:09:48,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:09:48,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:09:48,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:09:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:09:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:09:48,520 INFO L87 Difference]: Start difference. First operand 18471 states and 53249 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:09:49,670 INFO L93 Difference]: Finished difference Result 25764 states and 74264 transitions. [2022-03-03 17:09:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:09:49,670 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:09:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:09:49,722 INFO L225 Difference]: With dead ends: 25764 [2022-03-03 17:09:49,722 INFO L226 Difference]: Without dead ends: 25764 [2022-03-03 17:09:49,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:09:49,723 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1136 mSDsluCounter, 4434 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:09:49,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 4710 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:09:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25764 states. [2022-03-03 17:09:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25764 to 18711. [2022-03-03 17:09:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18711 states, 18710 states have (on average 2.8793693212186) internal successors, (53873), 18710 states have internal predecessors, (53873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18711 states to 18711 states and 53873 transitions. [2022-03-03 17:09:50,144 INFO L78 Accepts]: Start accepts. Automaton has 18711 states and 53873 transitions. Word has length 177 [2022-03-03 17:09:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:09:50,144 INFO L470 AbstractCegarLoop]: Abstraction has 18711 states and 53873 transitions. [2022-03-03 17:09:50,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:09:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 18711 states and 53873 transitions. [2022-03-03 17:09:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:09:50,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:09:50,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:09:50,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-03 17:09:50,172 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:09:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:09:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash -810387584, now seen corresponding path program 46 times [2022-03-03 17:09:50,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:09:50,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116943514] [2022-03-03 17:09:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:09:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:09:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:09:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:09:50,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:09:50,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116943514] [2022-03-03 17:09:50,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116943514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:09:50,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223594857] [2022-03-03 17:09:50,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:09:50,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:09:50,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:09:50,674 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:09:50,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 17:09:50,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:09:50,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:09:50,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-03 17:09:50,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:09:51,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:09:51,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:09:51,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:09:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:09:51,971 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:09:51,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-03 17:09:52,453 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:09:52,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-03 17:09:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:09:52,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:09:53,637 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:09:53,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 53 [2022-03-03 17:09:53,645 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-03 17:09:53,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1207 treesize of output 1063 [2022-03-03 17:09:53,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:09:53,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1063 treesize of output 999 [2022-03-03 17:09:53,676 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:09:53,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2022-03-03 17:10:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:10:04,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223594857] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:10:04,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:10:04,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 25] total 71 [2022-03-03 17:10:04,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368031515] [2022-03-03 17:10:04,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:10:04,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-03 17:10:04,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-03 17:10:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=4584, Unknown=92, NotChecked=0, Total=4970 [2022-03-03 17:10:04,728 INFO L87 Difference]: Start difference. First operand 18711 states and 53873 transitions. Second operand has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:12,234 INFO L93 Difference]: Finished difference Result 35230 states and 101498 transitions. [2022-03-03 17:10:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 17:10:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:12,312 INFO L225 Difference]: With dead ends: 35230 [2022-03-03 17:10:12,313 INFO L226 Difference]: Without dead ends: 35230 [2022-03-03 17:10:12,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 309 SyntacticMatches, 12 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3052 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2406, Invalid=12264, Unknown=92, NotChecked=0, Total=14762 [2022-03-03 17:10:12,315 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 5082 mSDsluCounter, 14173 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 14411 SdHoareTripleChecker+Invalid, 4309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:12,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 14411 Invalid, 4309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3757 Invalid, 0 Unknown, 501 Unchecked, 1.6s Time] [2022-03-03 17:10:12,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35230 states. [2022-03-03 17:10:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35230 to 19867. [2022-03-03 17:10:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19867 states, 19866 states have (on average 2.902798751635961) internal successors, (57667), 19866 states have internal predecessors, (57667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19867 states to 19867 states and 57667 transitions. [2022-03-03 17:10:12,802 INFO L78 Accepts]: Start accepts. Automaton has 19867 states and 57667 transitions. Word has length 177 [2022-03-03 17:10:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:12,802 INFO L470 AbstractCegarLoop]: Abstraction has 19867 states and 57667 transitions. [2022-03-03 17:10:12,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 19867 states and 57667 transitions. [2022-03-03 17:10:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:12,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:12,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:12,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 17:10:13,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:10:13,033 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:13,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:13,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1991958410, now seen corresponding path program 30 times [2022-03-03 17:10:13,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:13,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615395250] [2022-03-03 17:10:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:13,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:13,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:13,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615395250] [2022-03-03 17:10:13,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615395250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:10:13,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455601315] [2022-03-03 17:10:13,562 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:10:13,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:10:13,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:10:13,563 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:10:13,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 17:10:13,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:10:13,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:10:13,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-03 17:10:13,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:10:13,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:10:13,981 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:10:13,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:10:14,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:10:14,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:10:14,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:10:14,857 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:10:14,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-03 17:10:15,071 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:10:15,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:10:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:10:15,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:10:15,879 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:15,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-03-03 17:10:15,887 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-03 17:10:15,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1212 treesize of output 1068 [2022-03-03 17:10:15,909 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:15,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1068 treesize of output 1004 [2022-03-03 17:10:15,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:15,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2022-03-03 17:10:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:10:17,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455601315] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:10:17,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:10:17,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 65 [2022-03-03 17:10:17,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721383701] [2022-03-03 17:10:17,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:10:17,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-03 17:10:17,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-03 17:10:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3852, Unknown=68, NotChecked=0, Total=4160 [2022-03-03 17:10:17,903 INFO L87 Difference]: Start difference. First operand 19867 states and 57667 transitions. Second operand has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:22,180 INFO L93 Difference]: Finished difference Result 27703 states and 79763 transitions. [2022-03-03 17:10:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:10:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:22,238 INFO L225 Difference]: With dead ends: 27703 [2022-03-03 17:10:22,238 INFO L226 Difference]: Without dead ends: 27703 [2022-03-03 17:10:22,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 314 SyntacticMatches, 8 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1741, Invalid=8903, Unknown=68, NotChecked=0, Total=10712 [2022-03-03 17:10:22,240 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 4027 mSDsluCounter, 10756 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4027 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 360 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:22,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4027 Valid, 10936 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2788 Invalid, 0 Unknown, 360 Unchecked, 1.1s Time] [2022-03-03 17:10:22,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27703 states. [2022-03-03 17:10:22,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27703 to 17751. [2022-03-03 17:10:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17751 states, 17750 states have (on average 2.887042253521127) internal successors, (51245), 17750 states have internal predecessors, (51245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17751 states to 17751 states and 51245 transitions. [2022-03-03 17:10:22,590 INFO L78 Accepts]: Start accepts. Automaton has 17751 states and 51245 transitions. Word has length 177 [2022-03-03 17:10:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:22,590 INFO L470 AbstractCegarLoop]: Abstraction has 17751 states and 51245 transitions. [2022-03-03 17:10:22,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 17751 states and 51245 transitions. [2022-03-03 17:10:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:22,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:22,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:22,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 17:10:22,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:10:22,821 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash -488322240, now seen corresponding path program 33 times [2022-03-03 17:10:22,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:22,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791290476] [2022-03-03 17:10:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:23,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:23,378 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791290476] [2022-03-03 17:10:23,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791290476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:23,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:23,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-03 17:10:23,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767491141] [2022-03-03 17:10:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:23,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:10:23,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:10:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:10:23,379 INFO L87 Difference]: Start difference. First operand 17751 states and 51245 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:24,882 INFO L93 Difference]: Finished difference Result 29943 states and 86289 transitions. [2022-03-03 17:10:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:10:24,883 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:24,944 INFO L225 Difference]: With dead ends: 29943 [2022-03-03 17:10:24,944 INFO L226 Difference]: Without dead ends: 29943 [2022-03-03 17:10:24,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=550, Invalid=2102, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 17:10:24,945 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1627 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:24,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 4502 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29943 states. [2022-03-03 17:10:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29943 to 17703. [2022-03-03 17:10:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17703 states, 17702 states have (on average 2.8874138515421985) internal successors, (51113), 17702 states have internal predecessors, (51113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17703 states to 17703 states and 51113 transitions. [2022-03-03 17:10:25,492 INFO L78 Accepts]: Start accepts. Automaton has 17703 states and 51113 transitions. Word has length 177 [2022-03-03 17:10:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:25,492 INFO L470 AbstractCegarLoop]: Abstraction has 17703 states and 51113 transitions. [2022-03-03 17:10:25,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 17703 states and 51113 transitions. [2022-03-03 17:10:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:25,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:25,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:25,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-03 17:10:25,519 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash -650611166, now seen corresponding path program 34 times [2022-03-03 17:10:25,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:25,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323485339] [2022-03-03 17:10:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:26,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:26,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323485339] [2022-03-03 17:10:26,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323485339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:26,020 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:26,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-03 17:10:26,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011036220] [2022-03-03 17:10:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:26,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:10:26,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:26,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:10:26,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:10:26,020 INFO L87 Difference]: Start difference. First operand 17703 states and 51113 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:27,340 INFO L93 Difference]: Finished difference Result 26282 states and 76020 transitions. [2022-03-03 17:10:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 17:10:27,340 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:27,395 INFO L225 Difference]: With dead ends: 26282 [2022-03-03 17:10:27,395 INFO L226 Difference]: Without dead ends: 26282 [2022-03-03 17:10:27,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:10:27,395 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1483 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 4094 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:27,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 4094 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26282 states. [2022-03-03 17:10:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26282 to 17679. [2022-03-03 17:10:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17679 states, 17678 states have (on average 2.887600407285892) internal successors, (51047), 17678 states have internal predecessors, (51047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17679 states to 17679 states and 51047 transitions. [2022-03-03 17:10:27,740 INFO L78 Accepts]: Start accepts. Automaton has 17679 states and 51047 transitions. Word has length 177 [2022-03-03 17:10:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:27,740 INFO L470 AbstractCegarLoop]: Abstraction has 17679 states and 51047 transitions. [2022-03-03 17:10:27,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17679 states and 51047 transitions. [2022-03-03 17:10:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:27,766 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:27,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:27,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-03 17:10:27,766 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:27,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1948013948, now seen corresponding path program 35 times [2022-03-03 17:10:27,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:27,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696636666] [2022-03-03 17:10:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:27,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:28,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:28,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696636666] [2022-03-03 17:10:28,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696636666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:28,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:28,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-03 17:10:28,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18827090] [2022-03-03 17:10:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:28,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:10:28,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:10:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:10:28,259 INFO L87 Difference]: Start difference. First operand 17679 states and 51047 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:29,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:29,392 INFO L93 Difference]: Finished difference Result 25548 states and 73826 transitions. [2022-03-03 17:10:29,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:10:29,393 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:29,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:29,446 INFO L225 Difference]: With dead ends: 25548 [2022-03-03 17:10:29,446 INFO L226 Difference]: Without dead ends: 25548 [2022-03-03 17:10:29,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=1463, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:10:29,447 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1100 mSDsluCounter, 4111 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:29,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 4382 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25548 states. [2022-03-03 17:10:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25548 to 17655. [2022-03-03 17:10:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17655 states, 17654 states have (on average 2.8859748498923756) internal successors, (50949), 17654 states have internal predecessors, (50949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17655 states to 17655 states and 50949 transitions. [2022-03-03 17:10:29,772 INFO L78 Accepts]: Start accepts. Automaton has 17655 states and 50949 transitions. Word has length 177 [2022-03-03 17:10:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:29,772 INFO L470 AbstractCegarLoop]: Abstraction has 17655 states and 50949 transitions. [2022-03-03 17:10:29,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 17655 states and 50949 transitions. [2022-03-03 17:10:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:29,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:29,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:29,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-03 17:10:29,799 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1760133858, now seen corresponding path program 31 times [2022-03-03 17:10:29,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:29,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895048466] [2022-03-03 17:10:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:29,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:30,295 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:30,295 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895048466] [2022-03-03 17:10:30,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895048466] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:30,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:30,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:10:30,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779858777] [2022-03-03 17:10:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:30,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:10:30,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:10:30,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:10:30,296 INFO L87 Difference]: Start difference. First operand 17655 states and 50949 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:31,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:31,482 INFO L93 Difference]: Finished difference Result 24444 states and 70534 transitions. [2022-03-03 17:10:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:10:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:31,530 INFO L225 Difference]: With dead ends: 24444 [2022-03-03 17:10:31,530 INFO L226 Difference]: Without dead ends: 24444 [2022-03-03 17:10:31,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 17:10:31,531 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1257 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 3933 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:31,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 3933 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24444 states. [2022-03-03 17:10:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24444 to 16947. [2022-03-03 17:10:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16947 states, 16946 states have (on average 2.878850466186711) internal successors, (48785), 16946 states have internal predecessors, (48785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16947 states to 16947 states and 48785 transitions. [2022-03-03 17:10:31,867 INFO L78 Accepts]: Start accepts. Automaton has 16947 states and 48785 transitions. Word has length 177 [2022-03-03 17:10:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:31,867 INFO L470 AbstractCegarLoop]: Abstraction has 16947 states and 48785 transitions. [2022-03-03 17:10:31,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 16947 states and 48785 transitions. [2022-03-03 17:10:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:31,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:31,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:31,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-03 17:10:31,893 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1139092540, now seen corresponding path program 47 times [2022-03-03 17:10:31,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:31,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595571360] [2022-03-03 17:10:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:32,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:32,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595571360] [2022-03-03 17:10:32,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595571360] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:32,345 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:32,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-03 17:10:32,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911113854] [2022-03-03 17:10:32,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:32,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 17:10:32,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 17:10:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-03-03 17:10:32,346 INFO L87 Difference]: Start difference. First operand 16947 states and 48785 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:33,449 INFO L93 Difference]: Finished difference Result 23642 states and 68134 transitions. [2022-03-03 17:10:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:10:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:33,493 INFO L225 Difference]: With dead ends: 23642 [2022-03-03 17:10:33,494 INFO L226 Difference]: Without dead ends: 23642 [2022-03-03 17:10:33,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:10:33,494 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1259 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:33,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1259 Valid, 3701 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23642 states. [2022-03-03 17:10:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23642 to 16923. [2022-03-03 17:10:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16923 states, 16922 states have (on average 2.878087696489777) internal successors, (48703), 16922 states have internal predecessors, (48703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 48703 transitions. [2022-03-03 17:10:33,835 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 48703 transitions. Word has length 177 [2022-03-03 17:10:33,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:33,835 INFO L470 AbstractCegarLoop]: Abstraction has 16923 states and 48703 transitions. [2022-03-03 17:10:33,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 48703 transitions. [2022-03-03 17:10:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:33,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:33,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:33,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-03 17:10:33,862 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:33,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash -675517798, now seen corresponding path program 25 times [2022-03-03 17:10:33,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:33,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425003659] [2022-03-03 17:10:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:34,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:34,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425003659] [2022-03-03 17:10:34,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425003659] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:34,338 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:34,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:10:34,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228123935] [2022-03-03 17:10:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:34,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:10:34,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:10:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:10:34,338 INFO L87 Difference]: Start difference. First operand 16923 states and 48703 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:35,447 INFO L93 Difference]: Finished difference Result 22490 states and 64614 transitions. [2022-03-03 17:10:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 17:10:35,447 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:35,491 INFO L225 Difference]: With dead ends: 22490 [2022-03-03 17:10:35,491 INFO L226 Difference]: Without dead ends: 22490 [2022-03-03 17:10:35,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=1426, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:10:35,491 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1280 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:35,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 3916 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:35,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22490 states. [2022-03-03 17:10:35,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22490 to 15571. [2022-03-03 17:10:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 2.864033397559409) internal successors, (44593), 15570 states have internal predecessors, (44593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 44593 transitions. [2022-03-03 17:10:35,801 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 44593 transitions. Word has length 177 [2022-03-03 17:10:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:35,801 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 44593 transitions. [2022-03-03 17:10:35,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 44593 transitions. [2022-03-03 17:10:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:35,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:35,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:35,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-03 17:10:35,826 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 120243174, now seen corresponding path program 32 times [2022-03-03 17:10:35,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:35,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589126250] [2022-03-03 17:10:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:36,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:36,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589126250] [2022-03-03 17:10:36,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589126250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:10:36,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:10:36,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-03 17:10:36,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904994630] [2022-03-03 17:10:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:10:36,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 17:10:36,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:36,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 17:10:36,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:10:36,316 INFO L87 Difference]: Start difference. First operand 15571 states and 44593 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:37,612 INFO L93 Difference]: Finished difference Result 23056 states and 66132 transitions. [2022-03-03 17:10:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:10:37,613 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:37,658 INFO L225 Difference]: With dead ends: 23056 [2022-03-03 17:10:37,658 INFO L226 Difference]: Without dead ends: 23056 [2022-03-03 17:10:37,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=482, Invalid=1774, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:10:37,659 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1267 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:37,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 3953 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:10:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23056 states. [2022-03-03 17:10:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23056 to 15563. [2022-03-03 17:10:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 15562 states have (on average 2.8630638735381058) internal successors, (44555), 15562 states have internal predecessors, (44555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 44555 transitions. [2022-03-03 17:10:37,955 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 44555 transitions. Word has length 177 [2022-03-03 17:10:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:37,956 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 44555 transitions. [2022-03-03 17:10:37,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 44555 transitions. [2022-03-03 17:10:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:37,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:37,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:37,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-03 17:10:37,979 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1809884142, now seen corresponding path program 33 times [2022-03-03 17:10:37,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:37,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650918226] [2022-03-03 17:10:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:37,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:38,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:38,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650918226] [2022-03-03 17:10:38,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650918226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:10:38,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270160759] [2022-03-03 17:10:38,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:10:38,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:10:38,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:10:38,556 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:10:38,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 17:10:38,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:10:38,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:10:38,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-03 17:10:38,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:10:38,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:10:38,976 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:10:38,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:10:39,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:10:39,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:10:39,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:10:39,884 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:10:39,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-03 17:10:40,145 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:10:40,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:10:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:10:40,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:10:40,965 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:40,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-03-03 17:10:40,973 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-03 17:10:40,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 636 treesize of output 556 [2022-03-03 17:10:40,984 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:40,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 446 [2022-03-03 17:10:40,993 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:40,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 460 [2022-03-03 17:10:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:10:41,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270160759] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:10:41,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:10:41,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 23] total 64 [2022-03-03 17:10:41,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072059225] [2022-03-03 17:10:41,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:10:41,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-03 17:10:41,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-03 17:10:41,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3727, Unknown=72, NotChecked=0, Total=4032 [2022-03-03 17:10:41,938 INFO L87 Difference]: Start difference. First operand 15563 states and 44555 transitions. Second operand has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:10:53,238 INFO L93 Difference]: Finished difference Result 63450 states and 182149 transitions. [2022-03-03 17:10:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-03 17:10:53,238 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:10:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:10:53,406 INFO L225 Difference]: With dead ends: 63450 [2022-03-03 17:10:53,406 INFO L226 Difference]: Without dead ends: 63450 [2022-03-03 17:10:53,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 320 SyntacticMatches, 38 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8181 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=5025, Invalid=19709, Unknown=72, NotChecked=0, Total=24806 [2022-03-03 17:10:53,408 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 5857 mSDsluCounter, 16233 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5857 SdHoareTripleChecker+Valid, 16484 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1438 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:10:53,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5857 Valid, 16484 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3137 Invalid, 0 Unknown, 1438 Unchecked, 1.3s Time] [2022-03-03 17:10:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63450 states. [2022-03-03 17:10:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63450 to 15979. [2022-03-03 17:10:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15979 states, 15978 states have (on average 2.8641256728001) internal successors, (45763), 15978 states have internal predecessors, (45763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15979 states to 15979 states and 45763 transitions. [2022-03-03 17:10:54,062 INFO L78 Accepts]: Start accepts. Automaton has 15979 states and 45763 transitions. Word has length 177 [2022-03-03 17:10:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:10:54,062 INFO L470 AbstractCegarLoop]: Abstraction has 15979 states and 45763 transitions. [2022-03-03 17:10:54,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:10:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15979 states and 45763 transitions. [2022-03-03 17:10:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:10:54,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:10:54,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:10:54,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 17:10:54,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:10:54,287 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:10:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:10:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1150291222, now seen corresponding path program 34 times [2022-03-03 17:10:54,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:10:54,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30093502] [2022-03-03 17:10:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:10:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:10:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:10:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:54,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:10:54,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30093502] [2022-03-03 17:10:54,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30093502] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:10:54,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016231568] [2022-03-03 17:10:54,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:10:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:10:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:10:54,805 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:10:54,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 17:10:55,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:10:55,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:10:55,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-03 17:10:55,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:10:55,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:10:55,128 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-03 17:10:55,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-03 17:10:55,454 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-03 17:10:55,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-03 17:10:55,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-03-03 17:10:56,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:10:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:56,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:10:56,545 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-03 17:10:56,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 111 [2022-03-03 17:10:56,554 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:10:56,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 50 [2022-03-03 17:10:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:10:58,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016231568] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:10:58,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:10:58,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 60 [2022-03-03 17:10:58,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494703739] [2022-03-03 17:10:58,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:10:58,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-03 17:10:58,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:10:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-03 17:10:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3336, Unknown=1, NotChecked=0, Total=3540 [2022-03-03 17:10:58,327 INFO L87 Difference]: Start difference. First operand 15979 states and 45763 transitions. Second operand has 60 states, 60 states have (on average 6.933333333333334) internal successors, (416), 60 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:05,830 INFO L93 Difference]: Finished difference Result 37071 states and 106380 transitions. [2022-03-03 17:11:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-03 17:11:05,831 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.933333333333334) internal successors, (416), 60 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:05,906 INFO L225 Difference]: With dead ends: 37071 [2022-03-03 17:11:05,906 INFO L226 Difference]: Without dead ends: 37071 [2022-03-03 17:11:05,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 321 SyntacticMatches, 16 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 3524 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2455, Invalid=11824, Unknown=1, NotChecked=0, Total=14280 [2022-03-03 17:11:05,907 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 3560 mSDsluCounter, 15801 mSDsCounter, 0 mSdLazyCounter, 3221 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 15851 SdHoareTripleChecker+Invalid, 5165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1912 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:05,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3560 Valid, 15851 Invalid, 5165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3221 Invalid, 0 Unknown, 1912 Unchecked, 1.2s Time] [2022-03-03 17:11:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37071 states. [2022-03-03 17:11:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37071 to 11995. [2022-03-03 17:11:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11995 states, 11994 states have (on average 2.8294980823745206) internal successors, (33937), 11994 states have internal predecessors, (33937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11995 states to 11995 states and 33937 transitions. [2022-03-03 17:11:06,253 INFO L78 Accepts]: Start accepts. Automaton has 11995 states and 33937 transitions. Word has length 177 [2022-03-03 17:11:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:06,253 INFO L470 AbstractCegarLoop]: Abstraction has 11995 states and 33937 transitions. [2022-03-03 17:11:06,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.933333333333334) internal successors, (416), 60 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 11995 states and 33937 transitions. [2022-03-03 17:11:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:06,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:06,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:06,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-03 17:11:06,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:06,470 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2081850938, now seen corresponding path program 48 times [2022-03-03 17:11:06,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:06,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208620892] [2022-03-03 17:11:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:06,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:06,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:06,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208620892] [2022-03-03 17:11:06,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208620892] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:06,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:06,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:06,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972641811] [2022-03-03 17:11:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:06,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:06,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:06,755 INFO L87 Difference]: Start difference. First operand 11995 states and 33937 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:07,525 INFO L93 Difference]: Finished difference Result 27755 states and 79505 transitions. [2022-03-03 17:11:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:11:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:07,587 INFO L225 Difference]: With dead ends: 27755 [2022-03-03 17:11:07,587 INFO L226 Difference]: Without dead ends: 27755 [2022-03-03 17:11:07,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:11:07,588 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 1191 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:07,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 3431 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27755 states. [2022-03-03 17:11:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27755 to 12075. [2022-03-03 17:11:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12075 states, 12074 states have (on average 2.830296504886533) internal successors, (34173), 12074 states have internal predecessors, (34173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 34173 transitions. [2022-03-03 17:11:07,951 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 34173 transitions. Word has length 177 [2022-03-03 17:11:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:07,952 INFO L470 AbstractCegarLoop]: Abstraction has 12075 states and 34173 transitions. [2022-03-03 17:11:07,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 34173 transitions. [2022-03-03 17:11:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:07,968 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:07,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:07,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-03-03 17:11:07,969 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1172680446, now seen corresponding path program 36 times [2022-03-03 17:11:07,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:07,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995790320] [2022-03-03 17:11:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:08,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:08,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995790320] [2022-03-03 17:11:08,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995790320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:08,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573387412] [2022-03-03 17:11:08,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:11:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:08,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:08,276 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:11:08,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 17:11:08,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:11:08,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:08,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 63 conjunts are in the unsatisfiable core [2022-03-03 17:11:08,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:08,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:08,541 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-03 17:11:08,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-03 17:11:08,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:08,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-03-03 17:11:08,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:11:09,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:09,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:09,356 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:11:09,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-03-03 17:11:09,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:11:09,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:09,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:10,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:11:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:10,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:10,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573387412] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:11:10,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:11:10,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-03 17:11:10,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730358444] [2022-03-03 17:11:10,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:11:10,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-03 17:11:10,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-03 17:11:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2169, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 17:11:10,587 INFO L87 Difference]: Start difference. First operand 12075 states and 34173 transitions. Second operand has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:17,981 INFO L93 Difference]: Finished difference Result 41163 states and 118394 transitions. [2022-03-03 17:11:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-03 17:11:17,981 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:18,066 INFO L225 Difference]: With dead ends: 41163 [2022-03-03 17:11:18,066 INFO L226 Difference]: Without dead ends: 41163 [2022-03-03 17:11:18,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2148, Invalid=8772, Unknown=0, NotChecked=0, Total=10920 [2022-03-03 17:11:18,067 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 4216 mSDsluCounter, 11398 mSDsCounter, 0 mSdLazyCounter, 3398 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 11755 SdHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:18,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 11755 Invalid, 3865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3398 Invalid, 0 Unknown, 413 Unchecked, 1.6s Time] [2022-03-03 17:11:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41163 states. [2022-03-03 17:11:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41163 to 13891. [2022-03-03 17:11:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13891 states, 13890 states have (on average 2.856947444204464) internal successors, (39683), 13890 states have internal predecessors, (39683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13891 states to 13891 states and 39683 transitions. [2022-03-03 17:11:18,517 INFO L78 Accepts]: Start accepts. Automaton has 13891 states and 39683 transitions. Word has length 177 [2022-03-03 17:11:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:18,517 INFO L470 AbstractCegarLoop]: Abstraction has 13891 states and 39683 transitions. [2022-03-03 17:11:18,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13891 states and 39683 transitions. [2022-03-03 17:11:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:18,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:18,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:18,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 17:11:18,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:18,739 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1485350192, now seen corresponding path program 37 times [2022-03-03 17:11:18,739 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:18,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862413379] [2022-03-03 17:11:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:18,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:19,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:19,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862413379] [2022-03-03 17:11:19,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862413379] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:19,083 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:19,083 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:19,083 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032059164] [2022-03-03 17:11:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:19,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:19,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:19,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:19,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:19,084 INFO L87 Difference]: Start difference. First operand 13891 states and 39683 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:19,747 INFO L93 Difference]: Finished difference Result 26582 states and 76352 transitions. [2022-03-03 17:11:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:11:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:19,799 INFO L225 Difference]: With dead ends: 26582 [2022-03-03 17:11:19,800 INFO L226 Difference]: Without dead ends: 26582 [2022-03-03 17:11:19,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:19,800 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1133 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:19,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 3171 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26582 states. [2022-03-03 17:11:20,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26582 to 13923. [2022-03-03 17:11:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13923 states, 13922 states have (on average 2.858425513575636) internal successors, (39795), 13922 states have internal predecessors, (39795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13923 states to 13923 states and 39795 transitions. [2022-03-03 17:11:20,101 INFO L78 Accepts]: Start accepts. Automaton has 13923 states and 39795 transitions. Word has length 177 [2022-03-03 17:11:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:20,102 INFO L470 AbstractCegarLoop]: Abstraction has 13923 states and 39795 transitions. [2022-03-03 17:11:20,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13923 states and 39795 transitions. [2022-03-03 17:11:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:20,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:20,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:20,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-03-03 17:11:20,122 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1756783830, now seen corresponding path program 49 times [2022-03-03 17:11:20,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:20,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194752027] [2022-03-03 17:11:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:20,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:20,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194752027] [2022-03-03 17:11:20,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194752027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:20,508 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:20,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:20,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541691700] [2022-03-03 17:11:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:20,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:20,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:20,509 INFO L87 Difference]: Start difference. First operand 13923 states and 39795 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:21,157 INFO L93 Difference]: Finished difference Result 26686 states and 76646 transitions. [2022-03-03 17:11:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:11:21,157 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:21,210 INFO L225 Difference]: With dead ends: 26686 [2022-03-03 17:11:21,210 INFO L226 Difference]: Without dead ends: 26686 [2022-03-03 17:11:21,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:11:21,210 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1047 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:21,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 2728 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2022-03-03 17:11:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 13939. [2022-03-03 17:11:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13939 states, 13938 states have (on average 2.8583010474960537) internal successors, (39839), 13938 states have internal predecessors, (39839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13939 states to 13939 states and 39839 transitions. [2022-03-03 17:11:21,508 INFO L78 Accepts]: Start accepts. Automaton has 13939 states and 39839 transitions. Word has length 177 [2022-03-03 17:11:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:21,508 INFO L470 AbstractCegarLoop]: Abstraction has 13939 states and 39839 transitions. [2022-03-03 17:11:21,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 13939 states and 39839 transitions. [2022-03-03 17:11:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:21,529 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:21,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:21,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-03-03 17:11:21,529 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:21,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1484252432, now seen corresponding path program 50 times [2022-03-03 17:11:21,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:21,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916448624] [2022-03-03 17:11:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:21,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:21,890 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:21,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916448624] [2022-03-03 17:11:21,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916448624] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:21,890 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:21,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:21,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536382842] [2022-03-03 17:11:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:21,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:21,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:21,891 INFO L87 Difference]: Start difference. First operand 13939 states and 39839 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:22,567 INFO L93 Difference]: Finished difference Result 27032 states and 77634 transitions. [2022-03-03 17:11:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:11:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:22,623 INFO L225 Difference]: With dead ends: 27032 [2022-03-03 17:11:22,623 INFO L226 Difference]: Without dead ends: 27032 [2022-03-03 17:11:22,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:22,624 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 992 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:22,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 3084 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2022-03-03 17:11:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 13939. [2022-03-03 17:11:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13939 states, 13938 states have (on average 2.8583010474960537) internal successors, (39839), 13938 states have internal predecessors, (39839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13939 states to 13939 states and 39839 transitions. [2022-03-03 17:11:22,930 INFO L78 Accepts]: Start accepts. Automaton has 13939 states and 39839 transitions. Word has length 177 [2022-03-03 17:11:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:22,930 INFO L470 AbstractCegarLoop]: Abstraction has 13939 states and 39839 transitions. [2022-03-03 17:11:22,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 13939 states and 39839 transitions. [2022-03-03 17:11:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:22,950 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:22,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:22,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-03-03 17:11:22,951 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:22,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1947827174, now seen corresponding path program 26 times [2022-03-03 17:11:22,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:22,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357150321] [2022-03-03 17:11:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:22,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:23,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:23,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357150321] [2022-03-03 17:11:23,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357150321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:23,406 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:23,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:23,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568112005] [2022-03-03 17:11:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:23,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:23,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:23,406 INFO L87 Difference]: Start difference. First operand 13939 states and 39839 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:24,054 INFO L93 Difference]: Finished difference Result 26928 states and 77340 transitions. [2022-03-03 17:11:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:11:24,054 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:24,194 INFO L225 Difference]: With dead ends: 26928 [2022-03-03 17:11:24,194 INFO L226 Difference]: Without dead ends: 26928 [2022-03-03 17:11:24,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:11:24,195 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1061 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:24,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 2871 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2022-03-03 17:11:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 13931. [2022-03-03 17:11:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13931 states, 13930 states have (on average 2.8572146446518305) internal successors, (39801), 13930 states have internal predecessors, (39801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 39801 transitions. [2022-03-03 17:11:24,479 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 39801 transitions. Word has length 177 [2022-03-03 17:11:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:24,479 INFO L470 AbstractCegarLoop]: Abstraction has 13931 states and 39801 transitions. [2022-03-03 17:11:24,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 39801 transitions. [2022-03-03 17:11:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:24,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:24,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:24,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-03-03 17:11:24,499 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash -150426422, now seen corresponding path program 51 times [2022-03-03 17:11:24,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:24,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184115431] [2022-03-03 17:11:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:24,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:24,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:24,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184115431] [2022-03-03 17:11:24,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184115431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:24,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:24,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:24,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702183625] [2022-03-03 17:11:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:24,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:24,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:24,871 INFO L87 Difference]: Start difference. First operand 13931 states and 39801 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:25,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:25,646 INFO L93 Difference]: Finished difference Result 27424 states and 78736 transitions. [2022-03-03 17:11:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:11:25,647 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:25,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:25,703 INFO L225 Difference]: With dead ends: 27424 [2022-03-03 17:11:25,703 INFO L226 Difference]: Without dead ends: 27424 [2022-03-03 17:11:25,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:11:25,704 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1177 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:25,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 3793 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27424 states. [2022-03-03 17:11:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27424 to 13915. [2022-03-03 17:11:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13915 states, 13914 states have (on average 2.857337933017105) internal successors, (39757), 13914 states have internal predecessors, (39757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13915 states to 13915 states and 39757 transitions. [2022-03-03 17:11:26,020 INFO L78 Accepts]: Start accepts. Automaton has 13915 states and 39757 transitions. Word has length 177 [2022-03-03 17:11:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:26,020 INFO L470 AbstractCegarLoop]: Abstraction has 13915 states and 39757 transitions. [2022-03-03 17:11:26,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13915 states and 39757 transitions. [2022-03-03 17:11:26,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:26,041 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:26,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:26,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-03-03 17:11:26,041 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 144455970, now seen corresponding path program 27 times [2022-03-03 17:11:26,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:26,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452027950] [2022-03-03 17:11:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:26,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:26,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452027950] [2022-03-03 17:11:26,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452027950] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:26,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:26,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:26,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130345804] [2022-03-03 17:11:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:26,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:26,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:26,384 INFO L87 Difference]: Start difference. First operand 13915 states and 39757 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:27,060 INFO L93 Difference]: Finished difference Result 26992 states and 77516 transitions. [2022-03-03 17:11:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:11:27,061 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:27,118 INFO L225 Difference]: With dead ends: 26992 [2022-03-03 17:11:27,119 INFO L226 Difference]: Without dead ends: 26992 [2022-03-03 17:11:27,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:11:27,119 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 828 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:27,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 2946 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:27,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26992 states. [2022-03-03 17:11:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26992 to 13931. [2022-03-03 17:11:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13931 states, 13930 states have (on average 2.8572146446518305) internal successors, (39801), 13930 states have internal predecessors, (39801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 39801 transitions. [2022-03-03 17:11:27,422 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 39801 transitions. Word has length 177 [2022-03-03 17:11:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:27,422 INFO L470 AbstractCegarLoop]: Abstraction has 13931 states and 39801 transitions. [2022-03-03 17:11:27,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 39801 transitions. [2022-03-03 17:11:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:27,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:27,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:27,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-03-03 17:11:27,443 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1949907452, now seen corresponding path program 28 times [2022-03-03 17:11:27,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:27,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402956042] [2022-03-03 17:11:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:27,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:27,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402956042] [2022-03-03 17:11:27,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402956042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:27,780 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:27,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:27,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739107649] [2022-03-03 17:11:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:27,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:27,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:27,781 INFO L87 Difference]: Start difference. First operand 13931 states and 39801 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:28,637 INFO L93 Difference]: Finished difference Result 27856 states and 79988 transitions. [2022-03-03 17:11:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:11:28,637 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:28,694 INFO L225 Difference]: With dead ends: 27856 [2022-03-03 17:11:28,694 INFO L226 Difference]: Without dead ends: 27856 [2022-03-03 17:11:28,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:11:28,695 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 923 mSDsluCounter, 3551 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:28,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 3906 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-03 17:11:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 13875. [2022-03-03 17:11:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13875 states, 13874 states have (on average 2.8559175436067465) internal successors, (39623), 13874 states have internal predecessors, (39623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13875 states to 13875 states and 39623 transitions. [2022-03-03 17:11:29,008 INFO L78 Accepts]: Start accepts. Automaton has 13875 states and 39623 transitions. Word has length 177 [2022-03-03 17:11:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:29,008 INFO L470 AbstractCegarLoop]: Abstraction has 13875 states and 39623 transitions. [2022-03-03 17:11:29,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 13875 states and 39623 transitions. [2022-03-03 17:11:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:29,029 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:29,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:29,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-03-03 17:11:29,029 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1878945178, now seen corresponding path program 38 times [2022-03-03 17:11:29,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:29,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323986216] [2022-03-03 17:11:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:29,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:29,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:29,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323986216] [2022-03-03 17:11:29,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323986216] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:29,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:29,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:29,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596536556] [2022-03-03 17:11:29,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:29,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:29,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:29,460 INFO L87 Difference]: Start difference. First operand 13875 states and 39623 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:30,221 INFO L93 Difference]: Finished difference Result 27238 states and 78360 transitions. [2022-03-03 17:11:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:11:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:30,276 INFO L225 Difference]: With dead ends: 27238 [2022-03-03 17:11:30,276 INFO L226 Difference]: Without dead ends: 27238 [2022-03-03 17:11:30,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=1238, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:11:30,276 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1270 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:30,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3399 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2022-03-03 17:11:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 13891. [2022-03-03 17:11:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13891 states, 13890 states have (on average 2.8563714902807775) internal successors, (39675), 13890 states have internal predecessors, (39675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13891 states to 13891 states and 39675 transitions. [2022-03-03 17:11:30,597 INFO L78 Accepts]: Start accepts. Automaton has 13891 states and 39675 transitions. Word has length 177 [2022-03-03 17:11:30,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:30,597 INFO L470 AbstractCegarLoop]: Abstraction has 13891 states and 39675 transitions. [2022-03-03 17:11:30,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 13891 states and 39675 transitions. [2022-03-03 17:11:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:30,617 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:30,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:30,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-03-03 17:11:30,617 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:30,617 INFO L85 PathProgramCache]: Analyzing trace with hash -220399678, now seen corresponding path program 52 times [2022-03-03 17:11:30,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:30,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684286489] [2022-03-03 17:11:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:31,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:31,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684286489] [2022-03-03 17:11:31,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684286489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:31,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:31,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:31,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435155330] [2022-03-03 17:11:31,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:31,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:31,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:31,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:31,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:31,094 INFO L87 Difference]: Start difference. First operand 13891 states and 39675 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:31,805 INFO L93 Difference]: Finished difference Result 27028 states and 77678 transitions. [2022-03-03 17:11:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:11:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:31,858 INFO L225 Difference]: With dead ends: 27028 [2022-03-03 17:11:31,858 INFO L226 Difference]: Without dead ends: 27028 [2022-03-03 17:11:31,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:11:31,859 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1193 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:31,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 2769 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:31,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2022-03-03 17:11:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 13923. [2022-03-03 17:11:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13923 states, 13922 states have (on average 2.8561269932480964) internal successors, (39763), 13922 states have internal predecessors, (39763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13923 states to 13923 states and 39763 transitions. [2022-03-03 17:11:32,152 INFO L78 Accepts]: Start accepts. Automaton has 13923 states and 39763 transitions. Word has length 177 [2022-03-03 17:11:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:32,153 INFO L470 AbstractCegarLoop]: Abstraction has 13923 states and 39763 transitions. [2022-03-03 17:11:32,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 13923 states and 39763 transitions. [2022-03-03 17:11:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:32,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:32,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:32,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-03-03 17:11:32,173 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 186274222, now seen corresponding path program 53 times [2022-03-03 17:11:32,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:32,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530919664] [2022-03-03 17:11:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:32,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:32,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530919664] [2022-03-03 17:11:32,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530919664] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:32,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974611689] [2022-03-03 17:11:32,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:11:32,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:32,500 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:11:32,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 17:11:32,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:11:32,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:32,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 81 conjunts are in the unsatisfiable core [2022-03-03 17:11:32,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:32,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:32,752 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:11:32,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:11:32,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:32,937 INFO L353 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-03-03 17:11:32,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-03-03 17:11:33,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:11:33,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:33,454 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-03 17:11:33,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-03 17:11:33,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:11:33,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:33,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:11:34,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:35,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974611689] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:35,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:11:35,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 25] total 53 [2022-03-03 17:11:35,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248633778] [2022-03-03 17:11:35,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:35,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:11:35,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:11:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2462, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 17:11:35,115 INFO L87 Difference]: Start difference. First operand 13923 states and 39763 transitions. Second operand has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:36,584 INFO L93 Difference]: Finished difference Result 40088 states and 115288 transitions. [2022-03-03 17:11:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 17:11:36,585 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:36,667 INFO L225 Difference]: With dead ends: 40088 [2022-03-03 17:11:36,667 INFO L226 Difference]: Without dead ends: 40088 [2022-03-03 17:11:36,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=698, Invalid=5622, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:11:36,668 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 865 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:36,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 3918 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:11:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40088 states. [2022-03-03 17:11:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40088 to 15533. [2022-03-03 17:11:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15533 states, 15532 states have (on average 2.868722637136235) internal successors, (44557), 15532 states have internal predecessors, (44557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15533 states to 15533 states and 44557 transitions. [2022-03-03 17:11:37,116 INFO L78 Accepts]: Start accepts. Automaton has 15533 states and 44557 transitions. Word has length 177 [2022-03-03 17:11:37,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:37,117 INFO L470 AbstractCegarLoop]: Abstraction has 15533 states and 44557 transitions. [2022-03-03 17:11:37,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 15533 states and 44557 transitions. [2022-03-03 17:11:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:37,139 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:37,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:37,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 17:11:37,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:37,340 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 548390286, now seen corresponding path program 35 times [2022-03-03 17:11:37,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:37,341 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149929227] [2022-03-03 17:11:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:37,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:37,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149929227] [2022-03-03 17:11:37,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149929227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:37,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908218658] [2022-03-03 17:11:37,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:11:37,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:37,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:11:37,700 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:11:37,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 17:11:37,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:11:37,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:11:37,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 74 conjunts are in the unsatisfiable core [2022-03-03 17:11:37,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:11:37,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:37,945 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:11:37,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:11:38,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:38,133 INFO L353 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-03-03 17:11:38,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-03-03 17:11:38,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:11:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:11:38,710 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-03 17:11:38,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-03 17:11:38,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:11:39,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:39,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:11:39,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:11:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:11:39,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:11:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:40,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908218658] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:11:40,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:11:40,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20, 24] total 48 [2022-03-03 17:11:40,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881909087] [2022-03-03 17:11:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:40,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 17:11:40,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 17:11:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2016, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:11:40,090 INFO L87 Difference]: Start difference. First operand 15533 states and 44557 transitions. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:41,049 INFO L93 Difference]: Finished difference Result 31078 states and 89622 transitions. [2022-03-03 17:11:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:11:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:41,122 INFO L225 Difference]: With dead ends: 31078 [2022-03-03 17:11:41,122 INFO L226 Difference]: Without dead ends: 31078 [2022-03-03 17:11:41,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=487, Invalid=4069, Unknown=0, NotChecked=0, Total=4556 [2022-03-03 17:11:41,123 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 541 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:41,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 2466 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31078 states. [2022-03-03 17:11:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31078 to 15501. [2022-03-03 17:11:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15501 states, 15500 states have (on average 2.8689677419354838) internal successors, (44469), 15500 states have internal predecessors, (44469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15501 states to 15501 states and 44469 transitions. [2022-03-03 17:11:41,476 INFO L78 Accepts]: Start accepts. Automaton has 15501 states and 44469 transitions. Word has length 177 [2022-03-03 17:11:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:41,476 INFO L470 AbstractCegarLoop]: Abstraction has 15501 states and 44469 transitions. [2022-03-03 17:11:41,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 15501 states and 44469 transitions. [2022-03-03 17:11:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:41,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:41,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:41,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 17:11:41,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:11:41,699 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash -577479552, now seen corresponding path program 39 times [2022-03-03 17:11:41,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:41,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467316603] [2022-03-03 17:11:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:42,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:42,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467316603] [2022-03-03 17:11:42,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467316603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:42,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:42,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:42,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052867906] [2022-03-03 17:11:42,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:42,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:42,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:42,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:42,096 INFO L87 Difference]: Start difference. First operand 15501 states and 44469 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:42,828 INFO L93 Difference]: Finished difference Result 28796 states and 82918 transitions. [2022-03-03 17:11:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:11:42,829 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:42,895 INFO L225 Difference]: With dead ends: 28796 [2022-03-03 17:11:42,895 INFO L226 Difference]: Without dead ends: 28796 [2022-03-03 17:11:42,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:11:42,896 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1210 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:42,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 3065 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28796 states. [2022-03-03 17:11:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28796 to 15517. [2022-03-03 17:11:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15517 states, 15516 states have (on average 2.869876256767208) internal successors, (44529), 15516 states have internal predecessors, (44529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15517 states to 15517 states and 44529 transitions. [2022-03-03 17:11:43,225 INFO L78 Accepts]: Start accepts. Automaton has 15517 states and 44529 transitions. Word has length 177 [2022-03-03 17:11:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:43,226 INFO L470 AbstractCegarLoop]: Abstraction has 15517 states and 44529 transitions. [2022-03-03 17:11:43,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 15517 states and 44529 transitions. [2022-03-03 17:11:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:43,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:43,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:43,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-03-03 17:11:43,248 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1630312826, now seen corresponding path program 54 times [2022-03-03 17:11:43,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:43,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783954425] [2022-03-03 17:11:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:43,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:43,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783954425] [2022-03-03 17:11:43,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783954425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:43,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:43,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:43,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540311477] [2022-03-03 17:11:43,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:43,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:43,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:43,657 INFO L87 Difference]: Start difference. First operand 15517 states and 44529 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:44,350 INFO L93 Difference]: Finished difference Result 28758 states and 82818 transitions. [2022-03-03 17:11:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:11:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:44,411 INFO L225 Difference]: With dead ends: 28758 [2022-03-03 17:11:44,411 INFO L226 Difference]: Without dead ends: 28758 [2022-03-03 17:11:44,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:44,411 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1051 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:44,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 2763 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28758 states. [2022-03-03 17:11:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28758 to 15525. [2022-03-03 17:11:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15525 states, 15524 states have (on average 2.8698144808039165) internal successors, (44551), 15524 states have internal predecessors, (44551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15525 states to 15525 states and 44551 transitions. [2022-03-03 17:11:44,856 INFO L78 Accepts]: Start accepts. Automaton has 15525 states and 44551 transitions. Word has length 177 [2022-03-03 17:11:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:44,856 INFO L470 AbstractCegarLoop]: Abstraction has 15525 states and 44551 transitions. [2022-03-03 17:11:44,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15525 states and 44551 transitions. [2022-03-03 17:11:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:44,879 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:44,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:44,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-03-03 17:11:44,879 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1902844224, now seen corresponding path program 55 times [2022-03-03 17:11:44,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:44,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614137455] [2022-03-03 17:11:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:45,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:45,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614137455] [2022-03-03 17:11:45,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614137455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:45,222 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:45,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:45,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365329174] [2022-03-03 17:11:45,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:45,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:45,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:45,223 INFO L87 Difference]: Start difference. First operand 15525 states and 44551 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:45,898 INFO L93 Difference]: Finished difference Result 29064 states and 83696 transitions. [2022-03-03 17:11:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:11:45,899 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:45,956 INFO L225 Difference]: With dead ends: 29064 [2022-03-03 17:11:45,956 INFO L226 Difference]: Without dead ends: 29064 [2022-03-03 17:11:45,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:45,957 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 878 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:45,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 3439 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29064 states. [2022-03-03 17:11:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29064 to 15517. [2022-03-03 17:11:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15517 states, 15516 states have (on average 2.869876256767208) internal successors, (44529), 15516 states have internal predecessors, (44529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15517 states to 15517 states and 44529 transitions. [2022-03-03 17:11:46,293 INFO L78 Accepts]: Start accepts. Automaton has 15517 states and 44529 transitions. Word has length 177 [2022-03-03 17:11:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:46,294 INFO L470 AbstractCegarLoop]: Abstraction has 15517 states and 44529 transitions. [2022-03-03 17:11:46,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 15517 states and 44529 transitions. [2022-03-03 17:11:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:46,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:46,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:46,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-03-03 17:11:46,318 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1439269482, now seen corresponding path program 29 times [2022-03-03 17:11:46,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:46,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797072029] [2022-03-03 17:11:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:46,657 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:46,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797072029] [2022-03-03 17:11:46,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797072029] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:46,657 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:46,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:46,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886685865] [2022-03-03 17:11:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:46,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:46,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:46,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:46,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:46,658 INFO L87 Difference]: Start difference. First operand 15517 states and 44529 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:47,335 INFO L93 Difference]: Finished difference Result 28960 states and 83402 transitions. [2022-03-03 17:11:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:11:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:47,394 INFO L225 Difference]: With dead ends: 28960 [2022-03-03 17:11:47,394 INFO L226 Difference]: Without dead ends: 28960 [2022-03-03 17:11:47,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:11:47,394 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 849 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:47,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 3251 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28960 states. [2022-03-03 17:11:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28960 to 15493. [2022-03-03 17:11:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15493 states, 15492 states have (on average 2.8685127807900854) internal successors, (44439), 15492 states have internal predecessors, (44439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 44439 transitions. [2022-03-03 17:11:47,729 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 44439 transitions. Word has length 177 [2022-03-03 17:11:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:47,729 INFO L470 AbstractCegarLoop]: Abstraction has 15493 states and 44439 transitions. [2022-03-03 17:11:47,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 44439 transitions. [2022-03-03 17:11:47,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:47,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:47,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:47,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-03-03 17:11:47,751 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2041566512, now seen corresponding path program 40 times [2022-03-03 17:11:47,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:47,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190111069] [2022-03-03 17:11:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:48,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:48,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190111069] [2022-03-03 17:11:48,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190111069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:48,109 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:48,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:48,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201312899] [2022-03-03 17:11:48,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:48,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:48,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:48,110 INFO L87 Difference]: Start difference. First operand 15493 states and 44439 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:48,917 INFO L93 Difference]: Finished difference Result 28780 states and 82842 transitions. [2022-03-03 17:11:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:11:48,918 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:48,975 INFO L225 Difference]: With dead ends: 28780 [2022-03-03 17:11:48,975 INFO L226 Difference]: Without dead ends: 28780 [2022-03-03 17:11:48,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:11:48,976 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1022 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:48,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 3610 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28780 states. [2022-03-03 17:11:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28780 to 15525. [2022-03-03 17:11:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15525 states, 15524 states have (on average 2.8698144808039165) internal successors, (44551), 15524 states have internal predecessors, (44551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15525 states to 15525 states and 44551 transitions. [2022-03-03 17:11:49,318 INFO L78 Accepts]: Start accepts. Automaton has 15525 states and 44551 transitions. Word has length 177 [2022-03-03 17:11:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:49,318 INFO L470 AbstractCegarLoop]: Abstraction has 15525 states and 44551 transitions. [2022-03-03 17:11:49,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 15525 states and 44551 transitions. [2022-03-03 17:11:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:49,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:49,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:49,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-03-03 17:11:49,341 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 988733238, now seen corresponding path program 56 times [2022-03-03 17:11:49,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:49,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609858602] [2022-03-03 17:11:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:49,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:49,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609858602] [2022-03-03 17:11:49,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609858602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:49,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:49,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:49,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039309569] [2022-03-03 17:11:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:49,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:49,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:49,692 INFO L87 Difference]: Start difference. First operand 15525 states and 44551 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:50,425 INFO L93 Difference]: Finished difference Result 28750 states and 82764 transitions. [2022-03-03 17:11:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:11:50,426 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:50,486 INFO L225 Difference]: With dead ends: 28750 [2022-03-03 17:11:50,486 INFO L226 Difference]: Without dead ends: 28750 [2022-03-03 17:11:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:50,486 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1064 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:50,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 3127 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28750 states. [2022-03-03 17:11:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28750 to 15541. [2022-03-03 17:11:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15541 states, 15540 states have (on average 2.8696911196911197) internal successors, (44595), 15540 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15541 states to 15541 states and 44595 transitions. [2022-03-03 17:11:50,815 INFO L78 Accepts]: Start accepts. Automaton has 15541 states and 44595 transitions. Word has length 177 [2022-03-03 17:11:50,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:50,816 INFO L470 AbstractCegarLoop]: Abstraction has 15541 states and 44595 transitions. [2022-03-03 17:11:50,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15541 states and 44595 transitions. [2022-03-03 17:11:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:50,840 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:50,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:50,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-03-03 17:11:50,840 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:50,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash 716201840, now seen corresponding path program 57 times [2022-03-03 17:11:50,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:50,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016504518] [2022-03-03 17:11:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:50,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:51,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:51,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016504518] [2022-03-03 17:11:51,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016504518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:51,211 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:51,211 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:51,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665069448] [2022-03-03 17:11:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:51,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:51,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:51,212 INFO L87 Difference]: Start difference. First operand 15541 states and 44595 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:51,994 INFO L93 Difference]: Finished difference Result 29072 states and 83686 transitions. [2022-03-03 17:11:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:11:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:52,060 INFO L225 Difference]: With dead ends: 29072 [2022-03-03 17:11:52,060 INFO L226 Difference]: Without dead ends: 29072 [2022-03-03 17:11:52,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:11:52,061 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1099 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:52,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 3776 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29072 states. [2022-03-03 17:11:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29072 to 15541. [2022-03-03 17:11:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15541 states, 15540 states have (on average 2.8696911196911197) internal successors, (44595), 15540 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15541 states to 15541 states and 44595 transitions. [2022-03-03 17:11:52,391 INFO L78 Accepts]: Start accepts. Automaton has 15541 states and 44595 transitions. Word has length 177 [2022-03-03 17:11:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:52,391 INFO L470 AbstractCegarLoop]: Abstraction has 15541 states and 44595 transitions. [2022-03-03 17:11:52,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15541 states and 44595 transitions. [2022-03-03 17:11:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:52,415 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:52,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:52,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-03-03 17:11:52,415 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1179776582, now seen corresponding path program 30 times [2022-03-03 17:11:52,415 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:52,415 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969485495] [2022-03-03 17:11:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:52,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:52,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969485495] [2022-03-03 17:11:52,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969485495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:52,774 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:52,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:52,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436032949] [2022-03-03 17:11:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:52,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:52,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:52,775 INFO L87 Difference]: Start difference. First operand 15541 states and 44595 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:53,529 INFO L93 Difference]: Finished difference Result 28976 states and 83414 transitions. [2022-03-03 17:11:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:11:53,529 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:53,584 INFO L225 Difference]: With dead ends: 28976 [2022-03-03 17:11:53,584 INFO L226 Difference]: Without dead ends: 28976 [2022-03-03 17:11:53,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:11:53,585 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1238 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:53,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 2995 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:53,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28976 states. [2022-03-03 17:11:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28976 to 15533. [2022-03-03 17:11:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15533 states, 15532 states have (on average 2.868722637136235) internal successors, (44557), 15532 states have internal predecessors, (44557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15533 states to 15533 states and 44557 transitions. [2022-03-03 17:11:53,900 INFO L78 Accepts]: Start accepts. Automaton has 15533 states and 44557 transitions. Word has length 177 [2022-03-03 17:11:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:53,900 INFO L470 AbstractCegarLoop]: Abstraction has 15533 states and 44557 transitions. [2022-03-03 17:11:53,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 15533 states and 44557 transitions. [2022-03-03 17:11:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:53,924 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:53,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:53,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-03-03 17:11:53,924 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash -918477014, now seen corresponding path program 58 times [2022-03-03 17:11:53,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:53,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684393426] [2022-03-03 17:11:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:54,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:54,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684393426] [2022-03-03 17:11:54,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684393426] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:54,334 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:54,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:54,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683015616] [2022-03-03 17:11:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:54,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:54,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:54,335 INFO L87 Difference]: Start difference. First operand 15533 states and 44557 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:55,143 INFO L93 Difference]: Finished difference Result 29408 states and 84618 transitions. [2022-03-03 17:11:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:11:55,143 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:55,204 INFO L225 Difference]: With dead ends: 29408 [2022-03-03 17:11:55,204 INFO L226 Difference]: Without dead ends: 29408 [2022-03-03 17:11:55,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:11:55,205 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1139 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:55,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 4103 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2022-03-03 17:11:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 15517. [2022-03-03 17:11:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15517 states, 15516 states have (on average 2.8688450631606086) internal successors, (44513), 15516 states have internal predecessors, (44513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15517 states to 15517 states and 44513 transitions. [2022-03-03 17:11:55,540 INFO L78 Accepts]: Start accepts. Automaton has 15517 states and 44513 transitions. Word has length 177 [2022-03-03 17:11:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:55,540 INFO L470 AbstractCegarLoop]: Abstraction has 15517 states and 44513 transitions. [2022-03-03 17:11:55,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15517 states and 44513 transitions. [2022-03-03 17:11:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:55,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:55,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:55,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-03-03 17:11:55,564 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -623594622, now seen corresponding path program 31 times [2022-03-03 17:11:55,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:55,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90108187] [2022-03-03 17:11:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:55,904 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:55,904 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90108187] [2022-03-03 17:11:55,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90108187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:55,904 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:55,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:55,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659448507] [2022-03-03 17:11:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:55,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:55,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:55,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:55,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:55,905 INFO L87 Difference]: Start difference. First operand 15517 states and 44513 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:56,629 INFO L93 Difference]: Finished difference Result 28984 states and 83420 transitions. [2022-03-03 17:11:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:11:56,630 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:56,685 INFO L225 Difference]: With dead ends: 28984 [2022-03-03 17:11:56,685 INFO L226 Difference]: Without dead ends: 28984 [2022-03-03 17:11:56,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:11:56,685 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 771 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:56,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 3510 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28984 states. [2022-03-03 17:11:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28984 to 15533. [2022-03-03 17:11:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15533 states, 15532 states have (on average 2.868722637136235) internal successors, (44557), 15532 states have internal predecessors, (44557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15533 states to 15533 states and 44557 transitions. [2022-03-03 17:11:57,000 INFO L78 Accepts]: Start accepts. Automaton has 15533 states and 44557 transitions. Word has length 177 [2022-03-03 17:11:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:57,000 INFO L470 AbstractCegarLoop]: Abstraction has 15533 states and 44557 transitions. [2022-03-03 17:11:57,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 15533 states and 44557 transitions. [2022-03-03 17:11:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:57,023 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:57,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:57,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-03-03 17:11:57,023 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1577009252, now seen corresponding path program 32 times [2022-03-03 17:11:57,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:57,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158096455] [2022-03-03 17:11:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:57,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:57,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:57,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158096455] [2022-03-03 17:11:57,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158096455] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:57,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:57,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:11:57,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181713027] [2022-03-03 17:11:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:57,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:11:57,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:11:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:11:57,356 INFO L87 Difference]: Start difference. First operand 15533 states and 44557 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:58,132 INFO L93 Difference]: Finished difference Result 29848 states and 85892 transitions. [2022-03-03 17:11:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:11:58,133 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:58,193 INFO L225 Difference]: With dead ends: 29848 [2022-03-03 17:11:58,193 INFO L226 Difference]: Without dead ends: 29848 [2022-03-03 17:11:58,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:11:58,193 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1001 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:58,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3339 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:11:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29848 states. [2022-03-03 17:11:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29848 to 15469. [2022-03-03 17:11:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15469 states, 15468 states have (on average 2.868696664080683) internal successors, (44373), 15468 states have internal predecessors, (44373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15469 states to 15469 states and 44373 transitions. [2022-03-03 17:11:58,529 INFO L78 Accepts]: Start accepts. Automaton has 15469 states and 44373 transitions. Word has length 177 [2022-03-03 17:11:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:11:58,530 INFO L470 AbstractCegarLoop]: Abstraction has 15469 states and 44373 transitions. [2022-03-03 17:11:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 15469 states and 44373 transitions. [2022-03-03 17:11:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:11:58,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:11:58,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:11:58,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-03-03 17:11:58,553 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:11:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:11:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2110443726, now seen corresponding path program 41 times [2022-03-03 17:11:58,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:11:58,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325932499] [2022-03-03 17:11:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:11:58,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:11:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:11:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:11:58,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:11:58,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325932499] [2022-03-03 17:11:58,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325932499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:11:58,911 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:11:58,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:11:58,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049829636] [2022-03-03 17:11:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:11:58,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:11:58,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:11:58,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:11:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:11:58,912 INFO L87 Difference]: Start difference. First operand 15469 states and 44373 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:11:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:11:59,674 INFO L93 Difference]: Finished difference Result 28170 states and 80948 transitions. [2022-03-03 17:11:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:11:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:11:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:11:59,738 INFO L225 Difference]: With dead ends: 28170 [2022-03-03 17:11:59,738 INFO L226 Difference]: Without dead ends: 28170 [2022-03-03 17:11:59,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 17:11:59,739 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1165 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:11:59,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1165 Valid, 3508 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:11:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28170 states. [2022-03-03 17:12:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28170 to 15421. [2022-03-03 17:12:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15421 states, 15420 states have (on average 2.869066147859922) internal successors, (44241), 15420 states have internal predecessors, (44241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15421 states to 15421 states and 44241 transitions. [2022-03-03 17:12:00,076 INFO L78 Accepts]: Start accepts. Automaton has 15421 states and 44241 transitions. Word has length 177 [2022-03-03 17:12:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:00,077 INFO L470 AbstractCegarLoop]: Abstraction has 15421 states and 44241 transitions. [2022-03-03 17:12:00,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15421 states and 44241 transitions. [2022-03-03 17:12:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:00,100 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:00,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-03-03 17:12:00,100 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1312300756, now seen corresponding path program 42 times [2022-03-03 17:12:00,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:00,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844820044] [2022-03-03 17:12:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:00,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:00,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:00,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844820044] [2022-03-03 17:12:00,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844820044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:00,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:00,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:00,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712779089] [2022-03-03 17:12:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:00,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:00,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:00,461 INFO L87 Difference]: Start difference. First operand 15421 states and 44241 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:01,228 INFO L93 Difference]: Finished difference Result 28558 states and 82212 transitions. [2022-03-03 17:12:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:12:01,229 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:01,292 INFO L225 Difference]: With dead ends: 28558 [2022-03-03 17:12:01,292 INFO L226 Difference]: Without dead ends: 28558 [2022-03-03 17:12:01,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:12:01,292 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1421 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:01,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 3568 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2022-03-03 17:12:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 15429. [2022-03-03 17:12:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15429 states, 15428 states have (on average 2.8695229452942703) internal successors, (44271), 15428 states have internal predecessors, (44271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15429 states to 15429 states and 44271 transitions. [2022-03-03 17:12:01,607 INFO L78 Accepts]: Start accepts. Automaton has 15429 states and 44271 transitions. Word has length 177 [2022-03-03 17:12:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:01,607 INFO L470 AbstractCegarLoop]: Abstraction has 15429 states and 44271 transitions. [2022-03-03 17:12:01,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 15429 states and 44271 transitions. [2022-03-03 17:12:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:01,629 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:01,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:01,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-03-03 17:12:01,630 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 883321684, now seen corresponding path program 59 times [2022-03-03 17:12:01,630 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:01,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221517105] [2022-03-03 17:12:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:01,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:01,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:01,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221517105] [2022-03-03 17:12:01,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221517105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:01,995 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:01,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:01,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983409129] [2022-03-03 17:12:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:01,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:01,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:01,996 INFO L87 Difference]: Start difference. First operand 15429 states and 44271 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:02,747 INFO L93 Difference]: Finished difference Result 28230 states and 81210 transitions. [2022-03-03 17:12:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:12:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:02,806 INFO L225 Difference]: With dead ends: 28230 [2022-03-03 17:12:02,806 INFO L226 Difference]: Without dead ends: 28230 [2022-03-03 17:12:02,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:12:02,806 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1103 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:02,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 3524 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28230 states. [2022-03-03 17:12:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28230 to 15461. [2022-03-03 17:12:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15461 states, 15460 states have (on average 2.869275549805951) internal successors, (44359), 15460 states have internal predecessors, (44359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15461 states to 15461 states and 44359 transitions. [2022-03-03 17:12:03,227 INFO L78 Accepts]: Start accepts. Automaton has 15461 states and 44359 transitions. Word has length 177 [2022-03-03 17:12:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:03,227 INFO L470 AbstractCegarLoop]: Abstraction has 15461 states and 44359 transitions. [2022-03-03 17:12:03,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 15461 states and 44359 transitions. [2022-03-03 17:12:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:03,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:03,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:03,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-03-03 17:12:03,251 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1289995584, now seen corresponding path program 60 times [2022-03-03 17:12:03,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:03,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589285634] [2022-03-03 17:12:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:03,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:03,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589285634] [2022-03-03 17:12:03,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589285634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:12:03,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988983689] [2022-03-03 17:12:03,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:12:03,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:12:03,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:12:03,580 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:12:03,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 17:12:03,799 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 17:12:03,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:12:03,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-03 17:12:03,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:12:03,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:04,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:12:04,320 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:12:04,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:12:04,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:12:04,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:04,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:05,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2022-03-03 17:12:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:12:05,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:12:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:05,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988983689] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:12:05,865 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:12:05,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-03 17:12:05,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543258846] [2022-03-03 17:12:05,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:12:05,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-03 17:12:05,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-03 17:12:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:12:05,867 INFO L87 Difference]: Start difference. First operand 15461 states and 44359 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:16,068 INFO L93 Difference]: Finished difference Result 43625 states and 125321 transitions. [2022-03-03 17:12:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 17:12:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:16,161 INFO L225 Difference]: With dead ends: 43625 [2022-03-03 17:12:16,162 INFO L226 Difference]: Without dead ends: 43625 [2022-03-03 17:12:16,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3978 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=3509, Invalid=14581, Unknown=0, NotChecked=0, Total=18090 [2022-03-03 17:12:16,164 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 3453 mSDsluCounter, 16068 mSDsCounter, 0 mSdLazyCounter, 4690 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 16397 SdHoareTripleChecker+Invalid, 5109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:16,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3453 Valid, 16397 Invalid, 5109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 4690 Invalid, 0 Unknown, 344 Unchecked, 2.2s Time] [2022-03-03 17:12:16,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43625 states. [2022-03-03 17:12:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43625 to 17218. [2022-03-03 17:12:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17218 states, 17217 states have (on average 2.8837776616135216) internal successors, (49650), 17217 states have internal predecessors, (49650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17218 states to 17218 states and 49650 transitions. [2022-03-03 17:12:16,670 INFO L78 Accepts]: Start accepts. Automaton has 17218 states and 49650 transitions. Word has length 177 [2022-03-03 17:12:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:16,670 INFO L470 AbstractCegarLoop]: Abstraction has 17218 states and 49650 transitions. [2022-03-03 17:12:16,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 17218 states and 49650 transitions. [2022-03-03 17:12:16,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:16,695 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:16,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:16,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 17:12:16,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2022-03-03 17:12:16,896 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash 526241810, now seen corresponding path program 43 times [2022-03-03 17:12:16,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:16,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081790176] [2022-03-03 17:12:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:17,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:17,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081790176] [2022-03-03 17:12:17,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081790176] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:17,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:17,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:17,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282173217] [2022-03-03 17:12:17,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:17,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:17,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:17,261 INFO L87 Difference]: Start difference. First operand 17218 states and 49650 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:17,962 INFO L93 Difference]: Finished difference Result 28792 states and 82736 transitions. [2022-03-03 17:12:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:17,962 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:18,021 INFO L225 Difference]: With dead ends: 28792 [2022-03-03 17:12:18,022 INFO L226 Difference]: Without dead ends: 28792 [2022-03-03 17:12:18,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:12:18,022 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 860 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:18,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 3199 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28792 states. [2022-03-03 17:12:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28792 to 17234. [2022-03-03 17:12:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17234 states, 17233 states have (on average 2.8845819068067082) internal successors, (49710), 17233 states have internal predecessors, (49710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17234 states to 17234 states and 49710 transitions. [2022-03-03 17:12:18,373 INFO L78 Accepts]: Start accepts. Automaton has 17234 states and 49710 transitions. Word has length 177 [2022-03-03 17:12:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:18,373 INFO L470 AbstractCegarLoop]: Abstraction has 17234 states and 49710 transitions. [2022-03-03 17:12:18,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17234 states and 49710 transitions. [2022-03-03 17:12:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:18,399 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:18,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:18,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-03-03 17:12:18,399 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:18,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1000671752, now seen corresponding path program 36 times [2022-03-03 17:12:18,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:18,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663877047] [2022-03-03 17:12:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:18,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:18,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:18,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663877047] [2022-03-03 17:12:18,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663877047] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:18,752 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:18,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:18,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248459868] [2022-03-03 17:12:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:18,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:18,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:18,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:18,752 INFO L87 Difference]: Start difference. First operand 17234 states and 49710 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:19,408 INFO L93 Difference]: Finished difference Result 28770 states and 82688 transitions. [2022-03-03 17:12:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:19,408 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:19,471 INFO L225 Difference]: With dead ends: 28770 [2022-03-03 17:12:19,471 INFO L226 Difference]: Without dead ends: 28770 [2022-03-03 17:12:19,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:12:19,471 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1026 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:19,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 3071 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28770 states. [2022-03-03 17:12:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28770 to 17242. [2022-03-03 17:12:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17242 states, 17241 states have (on average 2.8845194594281076) internal successors, (49732), 17241 states have internal predecessors, (49732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17242 states to 17242 states and 49732 transitions. [2022-03-03 17:12:19,983 INFO L78 Accepts]: Start accepts. Automaton has 17242 states and 49732 transitions. Word has length 177 [2022-03-03 17:12:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:19,983 INFO L470 AbstractCegarLoop]: Abstraction has 17242 states and 49732 transitions. [2022-03-03 17:12:19,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 17242 states and 49732 transitions. [2022-03-03 17:12:20,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:20,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:20,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:20,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-03-03 17:12:20,009 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash -799122862, now seen corresponding path program 61 times [2022-03-03 17:12:20,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:20,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657371264] [2022-03-03 17:12:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:20,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:20,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:20,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657371264] [2022-03-03 17:12:20,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657371264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:20,357 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:20,357 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:20,357 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268347785] [2022-03-03 17:12:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:20,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:20,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:20,357 INFO L87 Difference]: Start difference. First operand 17242 states and 49732 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:21,044 INFO L93 Difference]: Finished difference Result 29202 states and 83910 transitions. [2022-03-03 17:12:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:12:21,045 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:21,104 INFO L225 Difference]: With dead ends: 29202 [2022-03-03 17:12:21,104 INFO L226 Difference]: Without dead ends: 29202 [2022-03-03 17:12:21,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:12:21,105 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1075 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:21,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 3630 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29202 states. [2022-03-03 17:12:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29202 to 17234. [2022-03-03 17:12:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17234 states, 17233 states have (on average 2.8845819068067082) internal successors, (49710), 17233 states have internal predecessors, (49710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17234 states to 17234 states and 49710 transitions. [2022-03-03 17:12:21,462 INFO L78 Accepts]: Start accepts. Automaton has 17234 states and 49710 transitions. Word has length 177 [2022-03-03 17:12:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:21,462 INFO L470 AbstractCegarLoop]: Abstraction has 17234 states and 49710 transitions. [2022-03-03 17:12:21,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 17234 states and 49710 transitions. [2022-03-03 17:12:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:21,488 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:21,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:21,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-03-03 17:12:21,488 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:21,489 INFO L85 PathProgramCache]: Analyzing trace with hash -335548120, now seen corresponding path program 33 times [2022-03-03 17:12:21,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:21,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154318186] [2022-03-03 17:12:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:21,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:21,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:21,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154318186] [2022-03-03 17:12:21,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154318186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:21,824 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:21,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:21,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134374133] [2022-03-03 17:12:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:21,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:21,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:21,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:21,825 INFO L87 Difference]: Start difference. First operand 17234 states and 49710 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:22,470 INFO L93 Difference]: Finished difference Result 28964 states and 83242 transitions. [2022-03-03 17:12:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:12:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:22,527 INFO L225 Difference]: With dead ends: 28964 [2022-03-03 17:12:22,527 INFO L226 Difference]: Without dead ends: 28964 [2022-03-03 17:12:22,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:12:22,528 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 807 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:22,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 3117 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28964 states. [2022-03-03 17:12:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28964 to 17242. [2022-03-03 17:12:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17242 states, 17241 states have (on average 2.8831274288034336) internal successors, (49708), 17241 states have internal predecessors, (49708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17242 states to 17242 states and 49708 transitions. [2022-03-03 17:12:22,891 INFO L78 Accepts]: Start accepts. Automaton has 17242 states and 49708 transitions. Word has length 177 [2022-03-03 17:12:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:22,891 INFO L470 AbstractCegarLoop]: Abstraction has 17242 states and 49708 transitions. [2022-03-03 17:12:22,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17242 states and 49708 transitions. [2022-03-03 17:12:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:22,916 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:22,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:22,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-03-03 17:12:22,917 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:22,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash -827001996, now seen corresponding path program 37 times [2022-03-03 17:12:22,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:22,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629958714] [2022-03-03 17:12:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:23,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:23,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629958714] [2022-03-03 17:12:23,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629958714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:23,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:23,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:23,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314997137] [2022-03-03 17:12:23,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:23,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:23,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:23,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:23,256 INFO L87 Difference]: Start difference. First operand 17242 states and 49708 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:24,099 INFO L93 Difference]: Finished difference Result 28730 states and 82546 transitions. [2022-03-03 17:12:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:12:24,099 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:24,155 INFO L225 Difference]: With dead ends: 28730 [2022-03-03 17:12:24,155 INFO L226 Difference]: Without dead ends: 28730 [2022-03-03 17:12:24,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=436, Invalid=1286, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:12:24,156 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1079 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:24,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 3820 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28730 states. [2022-03-03 17:12:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28730 to 17306. [2022-03-03 17:12:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17306 states, 17305 states have (on average 2.882635076567466) internal successors, (49884), 17305 states have internal predecessors, (49884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17306 states to 17306 states and 49884 transitions. [2022-03-03 17:12:24,508 INFO L78 Accepts]: Start accepts. Automaton has 17306 states and 49884 transitions. Word has length 177 [2022-03-03 17:12:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:24,509 INFO L470 AbstractCegarLoop]: Abstraction has 17306 states and 49884 transitions. [2022-03-03 17:12:24,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 17306 states and 49884 transitions. [2022-03-03 17:12:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:24,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:24,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:24,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-03-03 17:12:24,538 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:24,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:24,538 INFO L85 PathProgramCache]: Analyzing trace with hash 415868256, now seen corresponding path program 38 times [2022-03-03 17:12:24,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:24,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825990896] [2022-03-03 17:12:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:24,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:24,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:24,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825990896] [2022-03-03 17:12:24,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825990896] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:12:24,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578338134] [2022-03-03 17:12:24,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:12:24,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:12:24,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:12:24,972 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:12:24,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 17:12:25,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:12:25,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:12:25,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-03 17:12:25,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:12:25,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:12:25,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:25,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:26,247 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:12:26,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:12:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:12:26,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:12:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:26,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578338134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:12:26,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:12:26,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 44 [2022-03-03 17:12:26,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345840244] [2022-03-03 17:12:26,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:12:26,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-03 17:12:26,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:26,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-03 17:12:26,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 17:12:26,645 INFO L87 Difference]: Start difference. First operand 17306 states and 49884 transitions. Second operand has 44 states, 44 states have (on average 8.431818181818182) internal successors, (371), 44 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:29,061 INFO L93 Difference]: Finished difference Result 33382 states and 95718 transitions. [2022-03-03 17:12:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:12:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.431818181818182) internal successors, (371), 44 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:29,133 INFO L225 Difference]: With dead ends: 33382 [2022-03-03 17:12:29,134 INFO L226 Difference]: Without dead ends: 33382 [2022-03-03 17:12:29,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1302, Invalid=5018, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:12:29,135 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 2462 mSDsluCounter, 8580 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:29,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2462 Valid, 8860 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2528 Invalid, 0 Unknown, 153 Unchecked, 1.0s Time] [2022-03-03 17:12:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33382 states. [2022-03-03 17:12:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33382 to 16750. [2022-03-03 17:12:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16750 states, 16749 states have (on average 2.8837542539853125) internal successors, (48300), 16749 states have internal predecessors, (48300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16750 states to 16750 states and 48300 transitions. [2022-03-03 17:12:29,620 INFO L78 Accepts]: Start accepts. Automaton has 16750 states and 48300 transitions. Word has length 177 [2022-03-03 17:12:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:29,620 INFO L470 AbstractCegarLoop]: Abstraction has 16750 states and 48300 transitions. [2022-03-03 17:12:29,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.431818181818182) internal successors, (371), 44 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16750 states and 48300 transitions. [2022-03-03 17:12:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:29,645 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:29,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:29,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-03 17:12:29,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:12:29,845 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 462627316, now seen corresponding path program 44 times [2022-03-03 17:12:29,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:29,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976261027] [2022-03-03 17:12:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:30,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:30,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976261027] [2022-03-03 17:12:30,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976261027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:30,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:30,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:30,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099479423] [2022-03-03 17:12:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:30,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:30,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:30,188 INFO L87 Difference]: Start difference. First operand 16750 states and 48300 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:30,959 INFO L93 Difference]: Finished difference Result 28726 states and 82652 transitions. [2022-03-03 17:12:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:12:30,960 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:31,020 INFO L225 Difference]: With dead ends: 28726 [2022-03-03 17:12:31,021 INFO L226 Difference]: Without dead ends: 28726 [2022-03-03 17:12:31,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:12:31,021 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 1193 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:31,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 3408 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28726 states. [2022-03-03 17:12:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28726 to 16726. [2022-03-03 17:12:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16726 states, 16725 states have (on average 2.8839461883408073) internal successors, (48234), 16725 states have internal predecessors, (48234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16726 states to 16726 states and 48234 transitions. [2022-03-03 17:12:31,363 INFO L78 Accepts]: Start accepts. Automaton has 16726 states and 48234 transitions. Word has length 177 [2022-03-03 17:12:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:31,363 INFO L470 AbstractCegarLoop]: Abstraction has 16726 states and 48234 transitions. [2022-03-03 17:12:31,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16726 states and 48234 transitions. [2022-03-03 17:12:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:31,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:31,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:31,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-03-03 17:12:31,387 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:31,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2110797828, now seen corresponding path program 39 times [2022-03-03 17:12:31,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:31,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598046394] [2022-03-03 17:12:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:31,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:31,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:31,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598046394] [2022-03-03 17:12:31,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598046394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:31,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:31,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:31,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920671623] [2022-03-03 17:12:31,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:31,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:31,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:31,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:31,728 INFO L87 Difference]: Start difference. First operand 16726 states and 48234 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:32,421 INFO L93 Difference]: Finished difference Result 28414 states and 81702 transitions. [2022-03-03 17:12:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:12:32,422 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:32,484 INFO L225 Difference]: With dead ends: 28414 [2022-03-03 17:12:32,484 INFO L226 Difference]: Without dead ends: 28414 [2022-03-03 17:12:32,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:12:32,484 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 867 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:32,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3033 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28414 states. [2022-03-03 17:12:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28414 to 16758. [2022-03-03 17:12:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16758 states, 16757 states have (on average 2.883690398042609) internal successors, (48322), 16757 states have internal predecessors, (48322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16758 states to 16758 states and 48322 transitions. [2022-03-03 17:12:32,825 INFO L78 Accepts]: Start accepts. Automaton has 16758 states and 48322 transitions. Word has length 177 [2022-03-03 17:12:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:32,825 INFO L470 AbstractCegarLoop]: Abstraction has 16758 states and 48322 transitions. [2022-03-03 17:12:32,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 16758 states and 48322 transitions. [2022-03-03 17:12:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:32,849 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:32,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:32,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-03-03 17:12:32,849 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash -867927576, now seen corresponding path program 40 times [2022-03-03 17:12:32,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:32,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585084274] [2022-03-03 17:12:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:33,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:33,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585084274] [2022-03-03 17:12:33,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585084274] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:12:33,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028964640] [2022-03-03 17:12:33,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:12:33,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:12:33,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:12:33,189 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:12:33,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 17:12:33,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:12:33,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:12:33,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 17:12:33,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:12:33,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:12:34,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:34,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:34,359 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-03 17:12:34,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:12:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:12:34,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:12:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:36,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028964640] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:12:36,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:12:36,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 43 [2022-03-03 17:12:36,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711582795] [2022-03-03 17:12:36,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:12:36,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-03 17:12:36,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-03 17:12:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1610, Unknown=2, NotChecked=0, Total=1806 [2022-03-03 17:12:36,250 INFO L87 Difference]: Start difference. First operand 16758 states and 48322 transitions. Second operand has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:38,649 INFO L93 Difference]: Finished difference Result 30795 states and 88607 transitions. [2022-03-03 17:12:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:12:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:38,714 INFO L225 Difference]: With dead ends: 30795 [2022-03-03 17:12:38,715 INFO L226 Difference]: Without dead ends: 30795 [2022-03-03 17:12:38,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 337 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1355, Invalid=5123, Unknown=2, NotChecked=0, Total=6480 [2022-03-03 17:12:38,715 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 2034 mSDsluCounter, 6120 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:38,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2034 Valid, 6441 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1959 Invalid, 0 Unknown, 359 Unchecked, 0.9s Time] [2022-03-03 17:12:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30795 states. [2022-03-03 17:12:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30795 to 16506. [2022-03-03 17:12:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16506 states, 16505 states have (on average 2.884338079369888) internal successors, (47606), 16505 states have internal predecessors, (47606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16506 states to 16506 states and 47606 transitions. [2022-03-03 17:12:39,084 INFO L78 Accepts]: Start accepts. Automaton has 16506 states and 47606 transitions. Word has length 177 [2022-03-03 17:12:39,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:39,084 INFO L470 AbstractCegarLoop]: Abstraction has 16506 states and 47606 transitions. [2022-03-03 17:12:39,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 16506 states and 47606 transitions. [2022-03-03 17:12:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:39,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:39,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:39,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 17:12:39,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable209 [2022-03-03 17:12:39,310 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1993797414, now seen corresponding path program 45 times [2022-03-03 17:12:39,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:39,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711278777] [2022-03-03 17:12:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:39,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:39,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711278777] [2022-03-03 17:12:39,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711278777] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:39,645 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:39,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:39,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456638322] [2022-03-03 17:12:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:39,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:39,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:39,646 INFO L87 Difference]: Start difference. First operand 16506 states and 47606 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:40,329 INFO L93 Difference]: Finished difference Result 28184 states and 81034 transitions. [2022-03-03 17:12:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:12:40,329 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:40,391 INFO L225 Difference]: With dead ends: 28184 [2022-03-03 17:12:40,391 INFO L226 Difference]: Without dead ends: 28184 [2022-03-03 17:12:40,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:12:40,391 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1056 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:40,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 2777 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28184 states. [2022-03-03 17:12:40,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28184 to 16522. [2022-03-03 17:12:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16522 states, 16521 states have (on average 2.885176442103989) internal successors, (47666), 16521 states have internal predecessors, (47666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16522 states to 16522 states and 47666 transitions. [2022-03-03 17:12:40,735 INFO L78 Accepts]: Start accepts. Automaton has 16522 states and 47666 transitions. Word has length 177 [2022-03-03 17:12:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:40,735 INFO L470 AbstractCegarLoop]: Abstraction has 16522 states and 47666 transitions. [2022-03-03 17:12:40,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 16522 states and 47666 transitions. [2022-03-03 17:12:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:40,760 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:40,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:40,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-03-03 17:12:40,760 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 774256320, now seen corresponding path program 41 times [2022-03-03 17:12:40,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:40,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753213561] [2022-03-03 17:12:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:40,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:41,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:41,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753213561] [2022-03-03 17:12:41,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753213561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:41,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:41,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:41,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772246618] [2022-03-03 17:12:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:41,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:41,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:41,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:41,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:41,126 INFO L87 Difference]: Start difference. First operand 16522 states and 47666 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:41,870 INFO L93 Difference]: Finished difference Result 28146 states and 80934 transitions. [2022-03-03 17:12:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:12:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:41,929 INFO L225 Difference]: With dead ends: 28146 [2022-03-03 17:12:41,930 INFO L226 Difference]: Without dead ends: 28146 [2022-03-03 17:12:41,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:12:41,930 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1012 mSDsluCounter, 3111 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:41,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 3406 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28146 states. [2022-03-03 17:12:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28146 to 16530. [2022-03-03 17:12:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16530 states, 16529 states have (on average 2.8851110170004235) internal successors, (47688), 16529 states have internal predecessors, (47688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16530 states to 16530 states and 47688 transitions. [2022-03-03 17:12:42,296 INFO L78 Accepts]: Start accepts. Automaton has 16530 states and 47688 transitions. Word has length 177 [2022-03-03 17:12:42,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:42,296 INFO L470 AbstractCegarLoop]: Abstraction has 16530 states and 47688 transitions. [2022-03-03 17:12:42,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16530 states and 47688 transitions. [2022-03-03 17:12:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:42,322 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:42,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:42,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-03-03 17:12:42,322 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash 975805210, now seen corresponding path program 62 times [2022-03-03 17:12:42,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:42,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091232645] [2022-03-03 17:12:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:42,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:42,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091232645] [2022-03-03 17:12:42,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091232645] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:42,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:42,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:42,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477612480] [2022-03-03 17:12:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:42,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:42,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:42,696 INFO L87 Difference]: Start difference. First operand 16530 states and 47688 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:43,408 INFO L93 Difference]: Finished difference Result 28452 states and 81812 transitions. [2022-03-03 17:12:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:43,408 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:43,467 INFO L225 Difference]: With dead ends: 28452 [2022-03-03 17:12:43,467 INFO L226 Difference]: Without dead ends: 28452 [2022-03-03 17:12:43,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:12:43,468 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 813 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:43,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 3527 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28452 states. [2022-03-03 17:12:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28452 to 16522. [2022-03-03 17:12:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16522 states, 16521 states have (on average 2.885176442103989) internal successors, (47666), 16521 states have internal predecessors, (47666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16522 states to 16522 states and 47666 transitions. [2022-03-03 17:12:43,819 INFO L78 Accepts]: Start accepts. Automaton has 16522 states and 47666 transitions. Word has length 177 [2022-03-03 17:12:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:43,819 INFO L470 AbstractCegarLoop]: Abstraction has 16522 states and 47666 transitions. [2022-03-03 17:12:43,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16522 states and 47666 transitions. [2022-03-03 17:12:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:43,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:43,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:43,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-03-03 17:12:43,844 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1439379952, now seen corresponding path program 34 times [2022-03-03 17:12:43,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:43,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415805623] [2022-03-03 17:12:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:43,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:44,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:44,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415805623] [2022-03-03 17:12:44,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415805623] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:44,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:44,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:44,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601924822] [2022-03-03 17:12:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:44,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:44,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:44,192 INFO L87 Difference]: Start difference. First operand 16522 states and 47666 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:44,842 INFO L93 Difference]: Finished difference Result 28348 states and 81518 transitions. [2022-03-03 17:12:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:44,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:44,901 INFO L225 Difference]: With dead ends: 28348 [2022-03-03 17:12:44,901 INFO L226 Difference]: Without dead ends: 28348 [2022-03-03 17:12:44,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:12:44,901 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1039 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:44,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2914 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28348 states. [2022-03-03 17:12:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28348 to 16498. [2022-03-03 17:12:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16498 states, 16497 states have (on average 2.883918288173607) internal successors, (47576), 16497 states have internal predecessors, (47576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16498 states to 16498 states and 47576 transitions. [2022-03-03 17:12:45,237 INFO L78 Accepts]: Start accepts. Automaton has 16498 states and 47576 transitions. Word has length 177 [2022-03-03 17:12:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:45,238 INFO L470 AbstractCegarLoop]: Abstraction has 16498 states and 47576 transitions. [2022-03-03 17:12:45,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 16498 states and 47576 transitions. [2022-03-03 17:12:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:45,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:45,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:45,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-03-03 17:12:45,263 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash 625248650, now seen corresponding path program 46 times [2022-03-03 17:12:45,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:45,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042478488] [2022-03-03 17:12:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:45,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:45,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042478488] [2022-03-03 17:12:45,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042478488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:45,636 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:45,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:45,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751643189] [2022-03-03 17:12:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:45,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:45,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:45,637 INFO L87 Difference]: Start difference. First operand 16498 states and 47576 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:46,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:46,381 INFO L93 Difference]: Finished difference Result 28024 states and 80522 transitions. [2022-03-03 17:12:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:46,382 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:46,440 INFO L225 Difference]: With dead ends: 28024 [2022-03-03 17:12:46,441 INFO L226 Difference]: Without dead ends: 28024 [2022-03-03 17:12:46,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:12:46,441 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1222 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:46,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3489 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28024 states. [2022-03-03 17:12:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28024 to 16490. [2022-03-03 17:12:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16490 states, 16489 states have (on average 2.8825277457699072) internal successors, (47530), 16489 states have internal predecessors, (47530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16490 states to 16490 states and 47530 transitions. [2022-03-03 17:12:46,789 INFO L78 Accepts]: Start accepts. Automaton has 16490 states and 47530 transitions. Word has length 177 [2022-03-03 17:12:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:46,789 INFO L470 AbstractCegarLoop]: Abstraction has 16490 states and 47530 transitions. [2022-03-03 17:12:46,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 16490 states and 47530 transitions. [2022-03-03 17:12:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:46,815 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:46,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:46,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-03-03 17:12:46,815 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -901664912, now seen corresponding path program 42 times [2022-03-03 17:12:46,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:46,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057337802] [2022-03-03 17:12:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:47,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:47,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057337802] [2022-03-03 17:12:47,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057337802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:47,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:47,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:47,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737043590] [2022-03-03 17:12:47,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:47,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:47,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:47,180 INFO L87 Difference]: Start difference. First operand 16490 states and 47530 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:47,827 INFO L93 Difference]: Finished difference Result 27994 states and 80444 transitions. [2022-03-03 17:12:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:47,892 INFO L225 Difference]: With dead ends: 27994 [2022-03-03 17:12:47,892 INFO L226 Difference]: Without dead ends: 27994 [2022-03-03 17:12:47,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:12:47,893 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1105 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:47,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 2537 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27994 states. [2022-03-03 17:12:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27994 to 16470. [2022-03-03 17:12:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16470 states, 16469 states have (on average 2.881777885724695) internal successors, (47460), 16469 states have internal predecessors, (47460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16470 states to 16470 states and 47460 transitions. [2022-03-03 17:12:48,317 INFO L78 Accepts]: Start accepts. Automaton has 16470 states and 47460 transitions. Word has length 177 [2022-03-03 17:12:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:48,317 INFO L470 AbstractCegarLoop]: Abstraction has 16470 states and 47460 transitions. [2022-03-03 17:12:48,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 16470 states and 47460 transitions. [2022-03-03 17:12:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:48,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:48,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:48,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-03-03 17:12:48,343 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash -700116022, now seen corresponding path program 63 times [2022-03-03 17:12:48,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:48,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989863041] [2022-03-03 17:12:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:48,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:48,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989863041] [2022-03-03 17:12:48,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989863041] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:48,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:48,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:48,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023962286] [2022-03-03 17:12:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:48,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:48,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:48,676 INFO L87 Difference]: Start difference. First operand 16470 states and 47460 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:49,355 INFO L93 Difference]: Finished difference Result 28316 states and 81366 transitions. [2022-03-03 17:12:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:49,356 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:49,417 INFO L225 Difference]: With dead ends: 28316 [2022-03-03 17:12:49,417 INFO L226 Difference]: Without dead ends: 28316 [2022-03-03 17:12:49,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:12:49,417 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 745 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:49,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 3364 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28316 states. [2022-03-03 17:12:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28316 to 16470. [2022-03-03 17:12:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16470 states, 16469 states have (on average 2.881777885724695) internal successors, (47460), 16469 states have internal predecessors, (47460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16470 states to 16470 states and 47460 transitions. [2022-03-03 17:12:49,753 INFO L78 Accepts]: Start accepts. Automaton has 16470 states and 47460 transitions. Word has length 177 [2022-03-03 17:12:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:49,753 INFO L470 AbstractCegarLoop]: Abstraction has 16470 states and 47460 transitions. [2022-03-03 17:12:49,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16470 states and 47460 transitions. [2022-03-03 17:12:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:49,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:49,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:49,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-03-03 17:12:49,778 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:49,778 INFO L85 PathProgramCache]: Analyzing trace with hash -236541280, now seen corresponding path program 35 times [2022-03-03 17:12:49,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:49,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941391093] [2022-03-03 17:12:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:49,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:50,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:50,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941391093] [2022-03-03 17:12:50,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941391093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:50,118 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:50,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:50,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718918430] [2022-03-03 17:12:50,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:50,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:50,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:50,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:50,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:50,119 INFO L87 Difference]: Start difference. First operand 16470 states and 47460 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:50,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:50,805 INFO L93 Difference]: Finished difference Result 28220 states and 81094 transitions. [2022-03-03 17:12:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:12:50,806 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:50,863 INFO L225 Difference]: With dead ends: 28220 [2022-03-03 17:12:50,863 INFO L226 Difference]: Without dead ends: 28220 [2022-03-03 17:12:50,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:12:50,864 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 860 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:50,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 3226 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:50,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28220 states. [2022-03-03 17:12:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28220 to 16462. [2022-03-03 17:12:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16462 states, 16461 states have (on average 2.880869934997874) internal successors, (47422), 16461 states have internal predecessors, (47422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16462 states to 16462 states and 47422 transitions. [2022-03-03 17:12:51,221 INFO L78 Accepts]: Start accepts. Automaton has 16462 states and 47422 transitions. Word has length 177 [2022-03-03 17:12:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:51,222 INFO L470 AbstractCegarLoop]: Abstraction has 16462 states and 47422 transitions. [2022-03-03 17:12:51,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16462 states and 47422 transitions. [2022-03-03 17:12:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:51,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:51,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:51,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-03-03 17:12:51,248 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1960172420, now seen corresponding path program 64 times [2022-03-03 17:12:51,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:51,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417672250] [2022-03-03 17:12:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:51,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:51,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417672250] [2022-03-03 17:12:51,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417672250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:51,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:51,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:12:51,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757437132] [2022-03-03 17:12:51,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:51,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:12:51,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:12:51,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:12:51,594 INFO L87 Difference]: Start difference. First operand 16462 states and 47422 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:52,365 INFO L93 Difference]: Finished difference Result 28652 states and 82298 transitions. [2022-03-03 17:12:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:12:52,366 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:52,428 INFO L225 Difference]: With dead ends: 28652 [2022-03-03 17:12:52,428 INFO L226 Difference]: Without dead ends: 28652 [2022-03-03 17:12:52,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:12:52,429 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 982 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:52,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 3878 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:52,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28652 states. [2022-03-03 17:12:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28652 to 16446. [2022-03-03 17:12:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16446 states, 16445 states have (on average 2.880997263605959) internal successors, (47378), 16445 states have internal predecessors, (47378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16446 states to 16446 states and 47378 transitions. [2022-03-03 17:12:52,799 INFO L78 Accepts]: Start accepts. Automaton has 16446 states and 47378 transitions. Word has length 177 [2022-03-03 17:12:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:52,800 INFO L470 AbstractCegarLoop]: Abstraction has 16446 states and 47378 transitions. [2022-03-03 17:12:52,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:52,800 INFO L276 IsEmpty]: Start isEmpty. Operand 16446 states and 47378 transitions. [2022-03-03 17:12:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:52,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:52,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-03-03 17:12:52,824 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:52,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:52,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2039912484, now seen corresponding path program 36 times [2022-03-03 17:12:52,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:52,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212506558] [2022-03-03 17:12:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:53,166 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:53,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212506558] [2022-03-03 17:12:53,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212506558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:53,166 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:53,166 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:53,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458796707] [2022-03-03 17:12:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:53,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:53,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:53,167 INFO L87 Difference]: Start difference. First operand 16446 states and 47378 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:53,847 INFO L93 Difference]: Finished difference Result 28060 states and 80614 transitions. [2022-03-03 17:12:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:12:53,847 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:53,908 INFO L225 Difference]: With dead ends: 28060 [2022-03-03 17:12:53,908 INFO L226 Difference]: Without dead ends: 28060 [2022-03-03 17:12:53,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:12:53,909 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1109 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:53,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 2978 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:12:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28060 states. [2022-03-03 17:12:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28060 to 16354. [2022-03-03 17:12:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16354 states, 16353 states have (on average 2.878982449703418) internal successors, (47080), 16353 states have internal predecessors, (47080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16354 states to 16354 states and 47080 transitions. [2022-03-03 17:12:54,246 INFO L78 Accepts]: Start accepts. Automaton has 16354 states and 47080 transitions. Word has length 177 [2022-03-03 17:12:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:54,247 INFO L470 AbstractCegarLoop]: Abstraction has 16354 states and 47080 transitions. [2022-03-03 17:12:54,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16354 states and 47080 transitions. [2022-03-03 17:12:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:54,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:54,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:54,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-03-03 17:12:54,272 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 160691390, now seen corresponding path program 37 times [2022-03-03 17:12:54,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:54,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384475098] [2022-03-03 17:12:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:54,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:54,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384475098] [2022-03-03 17:12:54,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384475098] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:54,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:54,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:54,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746674882] [2022-03-03 17:12:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:54,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:54,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:54,621 INFO L87 Difference]: Start difference. First operand 16354 states and 47080 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:55,453 INFO L93 Difference]: Finished difference Result 27412 states and 78544 transitions. [2022-03-03 17:12:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:12:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:55,512 INFO L225 Difference]: With dead ends: 27412 [2022-03-03 17:12:55,512 INFO L226 Difference]: Without dead ends: 27412 [2022-03-03 17:12:55,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:12:55,512 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1059 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:55,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 3908 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:55,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27412 states. [2022-03-03 17:12:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27412 to 14746. [2022-03-03 17:12:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14746 states, 14745 states have (on average 2.8664632078670738) internal successors, (42266), 14745 states have internal predecessors, (42266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14746 states to 14746 states and 42266 transitions. [2022-03-03 17:12:55,827 INFO L78 Accepts]: Start accepts. Automaton has 14746 states and 42266 transitions. Word has length 177 [2022-03-03 17:12:55,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:55,827 INFO L470 AbstractCegarLoop]: Abstraction has 14746 states and 42266 transitions. [2022-03-03 17:12:55,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 14746 states and 42266 transitions. [2022-03-03 17:12:55,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:55,850 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:55,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:55,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-03-03 17:12:55,850 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1092416362, now seen corresponding path program 65 times [2022-03-03 17:12:55,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:55,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947126049] [2022-03-03 17:12:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:56,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:56,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947126049] [2022-03-03 17:12:56,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947126049] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:12:56,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:12:56,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:12:56,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924441243] [2022-03-03 17:12:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:12:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:12:56,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:12:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:12:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:12:56,165 INFO L87 Difference]: Start difference. First operand 14746 states and 42266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:12:57,037 INFO L93 Difference]: Finished difference Result 25364 states and 72916 transitions. [2022-03-03 17:12:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:12:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:12:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:12:57,091 INFO L225 Difference]: With dead ends: 25364 [2022-03-03 17:12:57,092 INFO L226 Difference]: Without dead ends: 25364 [2022-03-03 17:12:57,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:12:57,092 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 945 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:12:57,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 4168 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:12:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25364 states. [2022-03-03 17:12:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25364 to 14762. [2022-03-03 17:12:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14762 states, 14761 states have (on average 2.867420906442653) internal successors, (42326), 14761 states have internal predecessors, (42326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14762 states to 14762 states and 42326 transitions. [2022-03-03 17:12:57,403 INFO L78 Accepts]: Start accepts. Automaton has 14762 states and 42326 transitions. Word has length 177 [2022-03-03 17:12:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:12:57,404 INFO L470 AbstractCegarLoop]: Abstraction has 14762 states and 42326 transitions. [2022-03-03 17:12:57,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:12:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14762 states and 42326 transitions. [2022-03-03 17:12:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:12:57,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:12:57,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:12:57,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-03-03 17:12:57,485 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:12:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:12:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2001586854, now seen corresponding path program 47 times [2022-03-03 17:12:57,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:12:57,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876991109] [2022-03-03 17:12:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:12:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:12:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:12:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:12:57,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:12:57,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876991109] [2022-03-03 17:12:57,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876991109] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:12:57,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253711055] [2022-03-03 17:12:57,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:12:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:12:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:12:57,788 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:12:57,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 17:12:58,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:12:58,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:12:58,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-03 17:12:58,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:12:58,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:58,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:12:58,637 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:12:58,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:12:58,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:12:59,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:59,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:12:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:12:59,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:13:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:00,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253711055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:13:00,059 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:13:00,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 50 [2022-03-03 17:13:00,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753992431] [2022-03-03 17:13:00,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:13:00,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 17:13:00,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 17:13:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:13:00,060 INFO L87 Difference]: Start difference. First operand 14762 states and 42326 transitions. Second operand has 50 states, 50 states have (on average 7.68) internal successors, (384), 50 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:06,155 INFO L93 Difference]: Finished difference Result 40261 states and 116276 transitions. [2022-03-03 17:13:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:13:06,156 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.68) internal successors, (384), 50 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:06,251 INFO L225 Difference]: With dead ends: 40261 [2022-03-03 17:13:06,252 INFO L226 Difference]: Without dead ends: 40261 [2022-03-03 17:13:06,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2311, Invalid=9245, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 17:13:06,253 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 3409 mSDsluCounter, 7039 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3409 SdHoareTripleChecker+Valid, 7318 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:06,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3409 Valid, 7318 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2249 Invalid, 0 Unknown, 175 Unchecked, 1.1s Time] [2022-03-03 17:13:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40261 states. [2022-03-03 17:13:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40261 to 14762. [2022-03-03 17:13:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14762 states, 14761 states have (on average 2.867420906442653) internal successors, (42326), 14761 states have internal predecessors, (42326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14762 states to 14762 states and 42326 transitions. [2022-03-03 17:13:06,723 INFO L78 Accepts]: Start accepts. Automaton has 14762 states and 42326 transitions. Word has length 177 [2022-03-03 17:13:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:06,723 INFO L470 AbstractCegarLoop]: Abstraction has 14762 states and 42326 transitions. [2022-03-03 17:13:06,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.68) internal successors, (384), 50 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 14762 states and 42326 transitions. [2022-03-03 17:13:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:06,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:06,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:06,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-03 17:13:06,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-03-03 17:13:06,948 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1688917108, now seen corresponding path program 48 times [2022-03-03 17:13:06,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:06,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869256335] [2022-03-03 17:13:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:07,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:07,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869256335] [2022-03-03 17:13:07,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869256335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:07,322 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:07,322 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:07,322 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010230600] [2022-03-03 17:13:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:07,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:07,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:07,323 INFO L87 Difference]: Start difference. First operand 14762 states and 42326 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:08,040 INFO L93 Difference]: Finished difference Result 21583 states and 62151 transitions. [2022-03-03 17:13:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:08,040 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:08,084 INFO L225 Difference]: With dead ends: 21583 [2022-03-03 17:13:08,084 INFO L226 Difference]: Without dead ends: 21583 [2022-03-03 17:13:08,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:13:08,085 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1047 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:08,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 3247 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21583 states. [2022-03-03 17:13:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21583 to 14794. [2022-03-03 17:13:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14794 states, 14793 states have (on average 2.8687892922328126) internal successors, (42438), 14793 states have internal predecessors, (42438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14794 states to 14794 states and 42438 transitions. [2022-03-03 17:13:08,381 INFO L78 Accepts]: Start accepts. Automaton has 14794 states and 42438 transitions. Word has length 177 [2022-03-03 17:13:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:08,381 INFO L470 AbstractCegarLoop]: Abstraction has 14794 states and 42438 transitions. [2022-03-03 17:13:08,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 14794 states and 42438 transitions. [2022-03-03 17:13:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:08,404 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:08,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:08,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-03-03 17:13:08,404 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash 162003546, now seen corresponding path program 43 times [2022-03-03 17:13:08,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:08,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442552477] [2022-03-03 17:13:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:08,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:08,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:08,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442552477] [2022-03-03 17:13:08,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442552477] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:08,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:08,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:08,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478625246] [2022-03-03 17:13:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:08,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:08,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:08,779 INFO L87 Difference]: Start difference. First operand 14794 states and 42438 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:09,435 INFO L93 Difference]: Finished difference Result 21679 states and 62415 transitions. [2022-03-03 17:13:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:09,435 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:09,477 INFO L225 Difference]: With dead ends: 21679 [2022-03-03 17:13:09,477 INFO L226 Difference]: Without dead ends: 21679 [2022-03-03 17:13:09,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:09,478 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1029 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:09,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 2544 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21679 states. [2022-03-03 17:13:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21679 to 14810. [2022-03-03 17:13:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14810 states, 14809 states have (on average 2.8686609494226483) internal successors, (42482), 14809 states have internal predecessors, (42482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14810 states to 14810 states and 42482 transitions. [2022-03-03 17:13:09,790 INFO L78 Accepts]: Start accepts. Automaton has 14810 states and 42482 transitions. Word has length 177 [2022-03-03 17:13:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:09,791 INFO L470 AbstractCegarLoop]: Abstraction has 14810 states and 42482 transitions. [2022-03-03 17:13:09,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14810 states and 42482 transitions. [2022-03-03 17:13:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:09,815 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:09,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:09,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-03-03 17:13:09,816 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash 363552436, now seen corresponding path program 66 times [2022-03-03 17:13:09,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:09,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775294320] [2022-03-03 17:13:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:10,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:10,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775294320] [2022-03-03 17:13:10,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775294320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:10,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:10,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:10,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075229961] [2022-03-03 17:13:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:10,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:10,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:10,209 INFO L87 Difference]: Start difference. First operand 14810 states and 42482 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:10,898 INFO L93 Difference]: Finished difference Result 21961 states and 63211 transitions. [2022-03-03 17:13:10,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:10,944 INFO L225 Difference]: With dead ends: 21961 [2022-03-03 17:13:10,944 INFO L226 Difference]: Without dead ends: 21961 [2022-03-03 17:13:10,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:13:10,945 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 916 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:10,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 3096 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2022-03-03 17:13:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 14810. [2022-03-03 17:13:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14810 states, 14809 states have (on average 2.8686609494226483) internal successors, (42482), 14809 states have internal predecessors, (42482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14810 states to 14810 states and 42482 transitions. [2022-03-03 17:13:11,259 INFO L78 Accepts]: Start accepts. Automaton has 14810 states and 42482 transitions. Word has length 177 [2022-03-03 17:13:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:11,259 INFO L470 AbstractCegarLoop]: Abstraction has 14810 states and 42482 transitions. [2022-03-03 17:13:11,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 14810 states and 42482 transitions. [2022-03-03 17:13:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:11,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:11,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:11,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-03-03 17:13:11,283 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312106, now seen corresponding path program 49 times [2022-03-03 17:13:11,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:11,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702555094] [2022-03-03 17:13:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:11,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:11,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702555094] [2022-03-03 17:13:11,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702555094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:11,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:11,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:11,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006824448] [2022-03-03 17:13:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:11,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:11,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:11,705 INFO L87 Difference]: Start difference. First operand 14810 states and 42482 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:12,367 INFO L93 Difference]: Finished difference Result 22095 states and 63585 transitions. [2022-03-03 17:13:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:12,410 INFO L225 Difference]: With dead ends: 22095 [2022-03-03 17:13:12,410 INFO L226 Difference]: Without dead ends: 22095 [2022-03-03 17:13:12,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:12,411 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 848 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:12,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2695 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22095 states. [2022-03-03 17:13:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22095 to 14802. [2022-03-03 17:13:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14802 states, 14801 states have (on average 2.8676440781028307) internal successors, (42444), 14801 states have internal predecessors, (42444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14802 states to 14802 states and 42444 transitions. [2022-03-03 17:13:12,817 INFO L78 Accepts]: Start accepts. Automaton has 14802 states and 42444 transitions. Word has length 177 [2022-03-03 17:13:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:12,818 INFO L470 AbstractCegarLoop]: Abstraction has 14802 states and 42444 transitions. [2022-03-03 17:13:12,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14802 states and 42444 transitions. [2022-03-03 17:13:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:12,840 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:12,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:12,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-03-03 17:13:12,841 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1271126418, now seen corresponding path program 67 times [2022-03-03 17:13:12,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:12,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901867051] [2022-03-03 17:13:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:12,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:13,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:13,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901867051] [2022-03-03 17:13:13,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901867051] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:13,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:13,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:13,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263247040] [2022-03-03 17:13:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:13,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:13,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:13,186 INFO L87 Difference]: Start difference. First operand 14802 states and 42444 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:13,968 INFO L93 Difference]: Finished difference Result 22353 states and 64313 transitions. [2022-03-03 17:13:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:13:13,968 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:14,011 INFO L225 Difference]: With dead ends: 22353 [2022-03-03 17:13:14,011 INFO L226 Difference]: Without dead ends: 22353 [2022-03-03 17:13:14,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1251, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:13:14,012 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1146 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:14,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 3618 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22353 states. [2022-03-03 17:13:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22353 to 14786. [2022-03-03 17:13:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14786 states, 14785 states have (on average 2.8677713899222184) internal successors, (42400), 14785 states have internal predecessors, (42400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14786 states to 14786 states and 42400 transitions. [2022-03-03 17:13:14,314 INFO L78 Accepts]: Start accepts. Automaton has 14786 states and 42400 transitions. Word has length 177 [2022-03-03 17:13:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:14,314 INFO L470 AbstractCegarLoop]: Abstraction has 14786 states and 42400 transitions. [2022-03-03 17:13:14,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14786 states and 42400 transitions. [2022-03-03 17:13:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:14,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:14,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:14,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-03-03 17:13:14,337 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:14,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash 181940902, now seen corresponding path program 50 times [2022-03-03 17:13:14,337 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:14,337 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035393305] [2022-03-03 17:13:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:14,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:14,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035393305] [2022-03-03 17:13:14,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035393305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:14,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:14,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:14,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598614144] [2022-03-03 17:13:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:14,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:14,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:14,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:14,690 INFO L87 Difference]: Start difference. First operand 14786 states and 42400 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:15,369 INFO L93 Difference]: Finished difference Result 22159 states and 63761 transitions. [2022-03-03 17:13:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:13:15,369 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:15,411 INFO L225 Difference]: With dead ends: 22159 [2022-03-03 17:13:15,411 INFO L226 Difference]: Without dead ends: 22159 [2022-03-03 17:13:15,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:13:15,411 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 911 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:15,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2748 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22159 states. [2022-03-03 17:13:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22159 to 14802. [2022-03-03 17:13:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14802 states, 14801 states have (on average 2.8676440781028307) internal successors, (42444), 14801 states have internal predecessors, (42444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14802 states to 14802 states and 42444 transitions. [2022-03-03 17:13:15,701 INFO L78 Accepts]: Start accepts. Automaton has 14802 states and 42444 transitions. Word has length 177 [2022-03-03 17:13:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:15,701 INFO L470 AbstractCegarLoop]: Abstraction has 14802 states and 42444 transitions. [2022-03-03 17:13:15,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 14802 states and 42444 transitions. [2022-03-03 17:13:15,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:15,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:15,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:15,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-03-03 17:13:15,726 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:15,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:15,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1912422520, now seen corresponding path program 51 times [2022-03-03 17:13:15,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:15,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788080894] [2022-03-03 17:13:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:15,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:16,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:16,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788080894] [2022-03-03 17:13:16,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788080894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:16,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:16,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:16,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137374049] [2022-03-03 17:13:16,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:16,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:16,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:16,132 INFO L87 Difference]: Start difference. First operand 14802 states and 42444 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:16,924 INFO L93 Difference]: Finished difference Result 23023 states and 66233 transitions. [2022-03-03 17:13:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 17:13:16,924 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:16,972 INFO L225 Difference]: With dead ends: 23023 [2022-03-03 17:13:16,973 INFO L226 Difference]: Without dead ends: 23023 [2022-03-03 17:13:16,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 17:13:16,973 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 962 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:16,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 3631 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23023 states. [2022-03-03 17:13:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23023 to 14746. [2022-03-03 17:13:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14746 states, 14745 states have (on average 2.8664632078670738) internal successors, (42266), 14745 states have internal predecessors, (42266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14746 states to 14746 states and 42266 transitions. [2022-03-03 17:13:17,275 INFO L78 Accepts]: Start accepts. Automaton has 14746 states and 42266 transitions. Word has length 177 [2022-03-03 17:13:17,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:17,275 INFO L470 AbstractCegarLoop]: Abstraction has 14746 states and 42266 transitions. [2022-03-03 17:13:17,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 14746 states and 42266 transitions. [2022-03-03 17:13:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:17,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:17,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:17,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-03 17:13:17,297 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash 758245182, now seen corresponding path program 52 times [2022-03-03 17:13:17,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:17,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480987286] [2022-03-03 17:13:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:17,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:17,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480987286] [2022-03-03 17:13:17,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480987286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:17,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:17,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:17,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498134503] [2022-03-03 17:13:17,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:17,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:17,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:17,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:17,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:17,676 INFO L87 Difference]: Start difference. First operand 14746 states and 42266 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:18,345 INFO L93 Difference]: Finished difference Result 20981 states and 60255 transitions. [2022-03-03 17:13:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:13:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:18,383 INFO L225 Difference]: With dead ends: 20981 [2022-03-03 17:13:18,384 INFO L226 Difference]: Without dead ends: 20981 [2022-03-03 17:13:18,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:13:18,384 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 1137 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:18,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2326 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20981 states. [2022-03-03 17:13:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20981 to 14746. [2022-03-03 17:13:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14746 states, 14745 states have (on average 2.8664632078670738) internal successors, (42266), 14745 states have internal predecessors, (42266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14746 states to 14746 states and 42266 transitions. [2022-03-03 17:13:18,661 INFO L78 Accepts]: Start accepts. Automaton has 14746 states and 42266 transitions. Word has length 177 [2022-03-03 17:13:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:18,661 INFO L470 AbstractCegarLoop]: Abstraction has 14746 states and 42266 transitions. [2022-03-03 17:13:18,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14746 states and 42266 transitions. [2022-03-03 17:13:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:18,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:18,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:18,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-03 17:13:18,685 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1815179962, now seen corresponding path program 44 times [2022-03-03 17:13:18,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:18,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810291005] [2022-03-03 17:13:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:19,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:19,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810291005] [2022-03-03 17:13:19,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810291005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:19,049 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:19,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:19,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318304483] [2022-03-03 17:13:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:19,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:19,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:19,050 INFO L87 Difference]: Start difference. First operand 14746 states and 42266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:19,745 INFO L93 Difference]: Finished difference Result 21029 states and 60371 transitions. [2022-03-03 17:13:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:13:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:19,788 INFO L225 Difference]: With dead ends: 21029 [2022-03-03 17:13:19,788 INFO L226 Difference]: Without dead ends: 21029 [2022-03-03 17:13:19,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:13:19,789 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 838 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:19,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 2707 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21029 states. [2022-03-03 17:13:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21029 to 14778. [2022-03-03 17:13:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14778 states, 14777 states have (on average 2.866211003586655) internal successors, (42354), 14777 states have internal predecessors, (42354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14778 states to 14778 states and 42354 transitions. [2022-03-03 17:13:20,083 INFO L78 Accepts]: Start accepts. Automaton has 14778 states and 42354 transitions. Word has length 177 [2022-03-03 17:13:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:20,084 INFO L470 AbstractCegarLoop]: Abstraction has 14778 states and 42354 transitions. [2022-03-03 17:13:20,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14778 states and 42354 transitions. [2022-03-03 17:13:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:20,107 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:20,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-03-03 17:13:20,107 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash -572309710, now seen corresponding path program 45 times [2022-03-03 17:13:20,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:20,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990580285] [2022-03-03 17:13:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:20,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:20,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990580285] [2022-03-03 17:13:20,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990580285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:13:20,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040767331] [2022-03-03 17:13:20,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:13:20,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:13:20,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:13:20,477 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:13:20,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 17:13:20,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:13:20,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:13:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-03 17:13:20,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:13:21,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:13:21,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:13:21,402 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:13:21,714 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-03 17:13:21,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:13:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:13:21,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:13:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:22,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040767331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:13:22,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:13:22,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-03-03 17:13:22,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215227714] [2022-03-03 17:13:22,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:13:22,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 17:13:22,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 17:13:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:13:22,134 INFO L87 Difference]: Start difference. First operand 14778 states and 42354 transitions. Second operand has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:26,724 INFO L93 Difference]: Finished difference Result 34534 states and 97438 transitions. [2022-03-03 17:13:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:13:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:26,799 INFO L225 Difference]: With dead ends: 34534 [2022-03-03 17:13:26,799 INFO L226 Difference]: Without dead ends: 34534 [2022-03-03 17:13:26,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 2665 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2453, Invalid=8676, Unknown=1, NotChecked=0, Total=11130 [2022-03-03 17:13:26,801 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 3474 mSDsluCounter, 7213 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 7404 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1024 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:26,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3474 Valid, 7404 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1939 Invalid, 0 Unknown, 1024 Unchecked, 0.8s Time] [2022-03-03 17:13:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34534 states. [2022-03-03 17:13:27,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34534 to 13424. [2022-03-03 17:13:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 13423 states have (on average 2.85152350443269) internal successors, (38276), 13423 states have internal predecessors, (38276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 38276 transitions. [2022-03-03 17:13:27,283 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 38276 transitions. Word has length 177 [2022-03-03 17:13:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:27,283 INFO L470 AbstractCegarLoop]: Abstraction has 13424 states and 38276 transitions. [2022-03-03 17:13:27,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 38276 transitions. [2022-03-03 17:13:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:27,305 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:27,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:27,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-03 17:13:27,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2022-03-03 17:13:27,506 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1698179548, now seen corresponding path program 53 times [2022-03-03 17:13:27,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:27,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328782487] [2022-03-03 17:13:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:27,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:27,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328782487] [2022-03-03 17:13:27,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328782487] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:27,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:27,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:27,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454946130] [2022-03-03 17:13:27,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:27,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:27,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:27,854 INFO L87 Difference]: Start difference. First operand 13424 states and 38276 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:28,526 INFO L93 Difference]: Finished difference Result 19809 states and 56681 transitions. [2022-03-03 17:13:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:28,527 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:28,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:28,565 INFO L225 Difference]: With dead ends: 19809 [2022-03-03 17:13:28,566 INFO L226 Difference]: Without dead ends: 19809 [2022-03-03 17:13:28,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:13:28,566 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 962 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:28,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 2824 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19809 states. [2022-03-03 17:13:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19809 to 13440. [2022-03-03 17:13:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13440 states, 13439 states have (on average 2.8525931988987274) internal successors, (38336), 13439 states have internal predecessors, (38336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13440 states to 13440 states and 38336 transitions. [2022-03-03 17:13:28,821 INFO L78 Accepts]: Start accepts. Automaton has 13440 states and 38336 transitions. Word has length 177 [2022-03-03 17:13:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 13440 states and 38336 transitions. [2022-03-03 17:13:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13440 states and 38336 transitions. [2022-03-03 17:13:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:28,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:28,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:28,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-03-03 17:13:28,842 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1069874186, now seen corresponding path program 46 times [2022-03-03 17:13:28,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:28,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176516750] [2022-03-03 17:13:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:28,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:29,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:29,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176516750] [2022-03-03 17:13:29,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176516750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:29,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:29,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:29,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910121822] [2022-03-03 17:13:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:29,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:29,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:29,192 INFO L87 Difference]: Start difference. First operand 13440 states and 38336 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:29,856 INFO L93 Difference]: Finished difference Result 19763 states and 56551 transitions. [2022-03-03 17:13:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:29,856 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:29,893 INFO L225 Difference]: With dead ends: 19763 [2022-03-03 17:13:29,894 INFO L226 Difference]: Without dead ends: 19763 [2022-03-03 17:13:29,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:29,894 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 828 mSDsluCounter, 2575 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:29,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 2835 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19763 states. [2022-03-03 17:13:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19763 to 13448. [2022-03-03 17:13:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13448 states, 13447 states have (on average 2.852532163307801) internal successors, (38358), 13447 states have internal predecessors, (38358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13448 states to 13448 states and 38358 transitions. [2022-03-03 17:13:30,155 INFO L78 Accepts]: Start accepts. Automaton has 13448 states and 38358 transitions. Word has length 177 [2022-03-03 17:13:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:30,155 INFO L470 AbstractCegarLoop]: Abstraction has 13448 states and 38358 transitions. [2022-03-03 17:13:30,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 13448 states and 38358 transitions. [2022-03-03 17:13:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:30,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:30,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:30,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-03-03 17:13:30,176 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:30,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1271423076, now seen corresponding path program 68 times [2022-03-03 17:13:30,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:30,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431482289] [2022-03-03 17:13:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:30,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:30,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:30,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431482289] [2022-03-03 17:13:30,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431482289] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:30,536 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:30,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:30,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363840972] [2022-03-03 17:13:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:30,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:30,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:30,537 INFO L87 Difference]: Start difference. First operand 13448 states and 38358 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:31,177 INFO L93 Difference]: Finished difference Result 20005 states and 57237 transitions. [2022-03-03 17:13:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:13:31,177 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:31,216 INFO L225 Difference]: With dead ends: 20005 [2022-03-03 17:13:31,216 INFO L226 Difference]: Without dead ends: 20005 [2022-03-03 17:13:31,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:31,217 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 943 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:31,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2882 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20005 states. [2022-03-03 17:13:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20005 to 13440. [2022-03-03 17:13:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13440 states, 13439 states have (on average 2.8525931988987274) internal successors, (38336), 13439 states have internal predecessors, (38336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13440 states to 13440 states and 38336 transitions. [2022-03-03 17:13:31,491 INFO L78 Accepts]: Start accepts. Automaton has 13440 states and 38336 transitions. Word has length 177 [2022-03-03 17:13:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:31,491 INFO L470 AbstractCegarLoop]: Abstraction has 13440 states and 38336 transitions. [2022-03-03 17:13:31,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13440 states and 38336 transitions. [2022-03-03 17:13:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:31,512 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:31,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:31,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-03-03 17:13:31,512 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1401784550, now seen corresponding path program 54 times [2022-03-03 17:13:31,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:31,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128811552] [2022-03-03 17:13:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:31,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:31,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128811552] [2022-03-03 17:13:31,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128811552] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:31,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:31,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:31,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204603363] [2022-03-03 17:13:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:31,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:31,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:31,879 INFO L87 Difference]: Start difference. First operand 13440 states and 38336 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:32,506 INFO L93 Difference]: Finished difference Result 20115 states and 57545 transitions. [2022-03-03 17:13:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:13:32,507 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:32,545 INFO L225 Difference]: With dead ends: 20115 [2022-03-03 17:13:32,545 INFO L226 Difference]: Without dead ends: 20115 [2022-03-03 17:13:32,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:13:32,545 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 890 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:32,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2910 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:32,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20115 states. [2022-03-03 17:13:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20115 to 13416. [2022-03-03 17:13:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13416 states, 13415 states have (on average 2.8509877003354456) internal successors, (38246), 13415 states have internal predecessors, (38246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 38246 transitions. [2022-03-03 17:13:32,803 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 38246 transitions. Word has length 177 [2022-03-03 17:13:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:32,803 INFO L470 AbstractCegarLoop]: Abstraction has 13416 states and 38246 transitions. [2022-03-03 17:13:32,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 38246 transitions. [2022-03-03 17:13:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:32,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:32,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:32,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-03-03 17:13:32,823 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:32,824 INFO L85 PathProgramCache]: Analyzing trace with hash 920866516, now seen corresponding path program 55 times [2022-03-03 17:13:32,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:32,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57485995] [2022-03-03 17:13:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:32,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:33,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:33,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57485995] [2022-03-03 17:13:33,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57485995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:33,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:33,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:33,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735926407] [2022-03-03 17:13:33,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:33,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:33,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:33,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:33,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:33,205 INFO L87 Difference]: Start difference. First operand 13416 states and 38246 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:33,929 INFO L93 Difference]: Finished difference Result 19873 states and 56881 transitions. [2022-03-03 17:13:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:33,930 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:33,966 INFO L225 Difference]: With dead ends: 19873 [2022-03-03 17:13:33,966 INFO L226 Difference]: Without dead ends: 19873 [2022-03-03 17:13:33,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:13:33,967 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1151 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:33,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 3082 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19873 states. [2022-03-03 17:13:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19873 to 13448. [2022-03-03 17:13:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13448 states, 13447 states have (on average 2.852532163307801) internal successors, (38358), 13447 states have internal predecessors, (38358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13448 states to 13448 states and 38358 transitions. [2022-03-03 17:13:34,216 INFO L78 Accepts]: Start accepts. Automaton has 13448 states and 38358 transitions. Word has length 177 [2022-03-03 17:13:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:34,216 INFO L470 AbstractCegarLoop]: Abstraction has 13448 states and 38358 transitions. [2022-03-03 17:13:34,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13448 states and 38358 transitions. [2022-03-03 17:13:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:34,236 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:34,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:34,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-03 17:13:34,236 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash -606047046, now seen corresponding path program 47 times [2022-03-03 17:13:34,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:34,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459960555] [2022-03-03 17:13:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:34,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:34,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459960555] [2022-03-03 17:13:34,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459960555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:34,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:34,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:34,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848266485] [2022-03-03 17:13:34,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:34,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:34,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:34,623 INFO L87 Difference]: Start difference. First operand 13448 states and 38358 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:35,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:35,333 INFO L93 Difference]: Finished difference Result 19835 states and 56773 transitions. [2022-03-03 17:13:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:35,334 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:35,374 INFO L225 Difference]: With dead ends: 19835 [2022-03-03 17:13:35,374 INFO L226 Difference]: Without dead ends: 19835 [2022-03-03 17:13:35,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:35,374 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 827 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:35,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 3197 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19835 states. [2022-03-03 17:13:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19835 to 13464. [2022-03-03 17:13:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13464 states, 13463 states have (on average 2.8524103097377997) internal successors, (38402), 13463 states have internal predecessors, (38402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 38402 transitions. [2022-03-03 17:13:35,663 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 38402 transitions. Word has length 177 [2022-03-03 17:13:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:35,663 INFO L470 AbstractCegarLoop]: Abstraction has 13464 states and 38402 transitions. [2022-03-03 17:13:35,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:35,663 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 38402 transitions. [2022-03-03 17:13:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:35,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:35,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:35,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-03 17:13:35,688 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -404498156, now seen corresponding path program 69 times [2022-03-03 17:13:35,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:35,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361823565] [2022-03-03 17:13:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:36,147 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:36,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361823565] [2022-03-03 17:13:36,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361823565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:36,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:36,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:36,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397996754] [2022-03-03 17:13:36,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:36,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:36,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:36,148 INFO L87 Difference]: Start difference. First operand 13464 states and 38402 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:36,828 INFO L93 Difference]: Finished difference Result 20093 states and 57503 transitions. [2022-03-03 17:13:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:36,829 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:36,865 INFO L225 Difference]: With dead ends: 20093 [2022-03-03 17:13:36,865 INFO L226 Difference]: Without dead ends: 20093 [2022-03-03 17:13:36,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:13:36,866 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 939 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:36,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 2959 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20093 states. [2022-03-03 17:13:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20093 to 13464. [2022-03-03 17:13:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13464 states, 13463 states have (on average 2.8524103097377997) internal successors, (38402), 13463 states have internal predecessors, (38402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 38402 transitions. [2022-03-03 17:13:37,141 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 38402 transitions. Word has length 177 [2022-03-03 17:13:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:37,141 INFO L470 AbstractCegarLoop]: Abstraction has 13464 states and 38402 transitions. [2022-03-03 17:13:37,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 38402 transitions. [2022-03-03 17:13:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:37,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:37,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:37,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-03-03 17:13:37,163 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1217261514, now seen corresponding path program 56 times [2022-03-03 17:13:37,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:37,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918893250] [2022-03-03 17:13:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:37,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:37,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918893250] [2022-03-03 17:13:37,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918893250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:37,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:37,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:37,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652265375] [2022-03-03 17:13:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:37,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:37,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:37,606 INFO L87 Difference]: Start difference. First operand 13464 states and 38402 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:38,200 INFO L93 Difference]: Finished difference Result 20211 states and 57833 transitions. [2022-03-03 17:13:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:13:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:38,241 INFO L225 Difference]: With dead ends: 20211 [2022-03-03 17:13:38,241 INFO L226 Difference]: Without dead ends: 20211 [2022-03-03 17:13:38,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:38,241 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 934 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:38,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 2422 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20211 states. [2022-03-03 17:13:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20211 to 13456. [2022-03-03 17:13:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 13455 states have (on average 2.8512820512820514) internal successors, (38364), 13455 states have internal predecessors, (38364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 38364 transitions. [2022-03-03 17:13:38,510 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 38364 transitions. Word has length 177 [2022-03-03 17:13:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:38,511 INFO L470 AbstractCegarLoop]: Abstraction has 13456 states and 38364 transitions. [2022-03-03 17:13:38,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 38364 transitions. [2022-03-03 17:13:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:38,531 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:38,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:38,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-03-03 17:13:38,531 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2039177010, now seen corresponding path program 70 times [2022-03-03 17:13:38,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:38,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16647534] [2022-03-03 17:13:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:38,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:38,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:38,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16647534] [2022-03-03 17:13:38,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16647534] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:38,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:38,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:38,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624538217] [2022-03-03 17:13:38,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:38,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:38,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:38,892 INFO L87 Difference]: Start difference. First operand 13456 states and 38364 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:39,604 INFO L93 Difference]: Finished difference Result 20429 states and 58435 transitions. [2022-03-03 17:13:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:13:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:39,641 INFO L225 Difference]: With dead ends: 20429 [2022-03-03 17:13:39,641 INFO L226 Difference]: Without dead ends: 20429 [2022-03-03 17:13:39,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:13:39,641 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1093 mSDsluCounter, 2969 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:39,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 3259 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20429 states. [2022-03-03 17:13:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20429 to 13440. [2022-03-03 17:13:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13440 states, 13439 states have (on average 2.851402634124563) internal successors, (38320), 13439 states have internal predecessors, (38320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13440 states to 13440 states and 38320 transitions. [2022-03-03 17:13:39,899 INFO L78 Accepts]: Start accepts. Automaton has 13440 states and 38320 transitions. Word has length 177 [2022-03-03 17:13:39,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:39,899 INFO L470 AbstractCegarLoop]: Abstraction has 13440 states and 38320 transitions. [2022-03-03 17:13:39,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13440 states and 38320 transitions. [2022-03-03 17:13:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:39,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:39,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:39,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-03-03 17:13:39,920 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -586109690, now seen corresponding path program 57 times [2022-03-03 17:13:39,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:39,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927051662] [2022-03-03 17:13:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:40,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:40,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927051662] [2022-03-03 17:13:40,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927051662] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:40,273 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:40,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:40,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833212397] [2022-03-03 17:13:40,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:40,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:40,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:40,274 INFO L87 Difference]: Start difference. First operand 13440 states and 38320 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:40,939 INFO L93 Difference]: Finished difference Result 20219 states and 57839 transitions. [2022-03-03 17:13:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:13:40,939 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:40,980 INFO L225 Difference]: With dead ends: 20219 [2022-03-03 17:13:40,981 INFO L226 Difference]: Without dead ends: 20219 [2022-03-03 17:13:40,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:13:40,981 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 924 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:40,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 2604 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2022-03-03 17:13:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 13456. [2022-03-03 17:13:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 13455 states have (on average 2.8512820512820514) internal successors, (38364), 13455 states have internal predecessors, (38364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 38364 transitions. [2022-03-03 17:13:41,248 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 38364 transitions. Word has length 177 [2022-03-03 17:13:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:41,248 INFO L470 AbstractCegarLoop]: Abstraction has 13456 states and 38364 transitions. [2022-03-03 17:13:41,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 38364 transitions. [2022-03-03 17:13:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:41,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:41,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:41,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-03-03 17:13:41,269 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1614494184, now seen corresponding path program 58 times [2022-03-03 17:13:41,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:41,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176717175] [2022-03-03 17:13:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:41,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:41,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:41,620 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176717175] [2022-03-03 17:13:41,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176717175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:41,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:41,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:41,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128337928] [2022-03-03 17:13:41,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:41,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:41,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:41,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:41,621 INFO L87 Difference]: Start difference. First operand 13456 states and 38364 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:42,410 INFO L93 Difference]: Finished difference Result 21083 states and 60311 transitions. [2022-03-03 17:13:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:13:42,411 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:42,453 INFO L225 Difference]: With dead ends: 21083 [2022-03-03 17:13:42,454 INFO L226 Difference]: Without dead ends: 21083 [2022-03-03 17:13:42,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:13:42,454 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1242 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:42,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 3434 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2022-03-03 17:13:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 13392. [2022-03-03 17:13:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13392 states, 13391 states have (on average 2.8511686953924276) internal successors, (38180), 13391 states have internal predecessors, (38180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13392 states to 13392 states and 38180 transitions. [2022-03-03 17:13:42,734 INFO L78 Accepts]: Start accepts. Automaton has 13392 states and 38180 transitions. Word has length 177 [2022-03-03 17:13:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:42,734 INFO L470 AbstractCegarLoop]: Abstraction has 13392 states and 38180 transitions. [2022-03-03 17:13:42,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13392 states and 38180 transitions. [2022-03-03 17:13:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:42,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:42,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:42,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-03 17:13:42,755 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 64342592, now seen corresponding path program 71 times [2022-03-03 17:13:42,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:42,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385446326] [2022-03-03 17:13:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:43,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:43,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385446326] [2022-03-03 17:13:43,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385446326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:43,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:43,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:43,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842461911] [2022-03-03 17:13:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:43,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:43,126 INFO L87 Difference]: Start difference. First operand 13392 states and 38180 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:43,939 INFO L93 Difference]: Finished difference Result 23264 states and 66514 transitions. [2022-03-03 17:13:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:13:43,940 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:43,984 INFO L225 Difference]: With dead ends: 23264 [2022-03-03 17:13:43,984 INFO L226 Difference]: Without dead ends: 23264 [2022-03-03 17:13:43,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:13:43,984 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 983 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:43,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 4166 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23264 states. [2022-03-03 17:13:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23264 to 13392. [2022-03-03 17:13:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13392 states, 13391 states have (on average 2.8511686953924276) internal successors, (38180), 13391 states have internal predecessors, (38180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13392 states to 13392 states and 38180 transitions. [2022-03-03 17:13:44,268 INFO L78 Accepts]: Start accepts. Automaton has 13392 states and 38180 transitions. Word has length 177 [2022-03-03 17:13:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:44,268 INFO L470 AbstractCegarLoop]: Abstraction has 13392 states and 38180 transitions. [2022-03-03 17:13:44,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13392 states and 38180 transitions. [2022-03-03 17:13:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:44,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:44,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:44,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-03-03 17:13:44,288 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 973513084, now seen corresponding path program 59 times [2022-03-03 17:13:44,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:44,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580050451] [2022-03-03 17:13:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:44,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:44,611 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:44,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580050451] [2022-03-03 17:13:44,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580050451] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:13:44,611 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492715763] [2022-03-03 17:13:44,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:13:44,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:13:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:13:44,624 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:13:44,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 17:13:44,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:13:44,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:13:44,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-03 17:13:44,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:13:45,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:13:45,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:13:45,497 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:13:45,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:13:45,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:13:45,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:13:46,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:13:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:13:46,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:13:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:46,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492715763] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:13:46,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:13:46,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 50 [2022-03-03 17:13:46,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024089596] [2022-03-03 17:13:46,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:13:46,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 17:13:46,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 17:13:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:13:46,934 INFO L87 Difference]: Start difference. First operand 13392 states and 38180 transitions. Second operand has 50 states, 50 states have (on average 7.68) internal successors, (384), 50 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:53,847 INFO L93 Difference]: Finished difference Result 43578 states and 125447 transitions. [2022-03-03 17:13:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:13:53,847 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.68) internal successors, (384), 50 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:53,941 INFO L225 Difference]: With dead ends: 43578 [2022-03-03 17:13:53,941 INFO L226 Difference]: Without dead ends: 43578 [2022-03-03 17:13:53,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3129 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2505, Invalid=9927, Unknown=0, NotChecked=0, Total=12432 [2022-03-03 17:13:53,942 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 3637 mSDsluCounter, 9330 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3637 SdHoareTripleChecker+Valid, 9569 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:53,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 9569 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2626 Invalid, 0 Unknown, 364 Unchecked, 1.2s Time] [2022-03-03 17:13:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43578 states. [2022-03-03 17:13:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43578 to 13392. [2022-03-03 17:13:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13392 states, 13391 states have (on average 2.8511686953924276) internal successors, (38180), 13391 states have internal predecessors, (38180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13392 states to 13392 states and 38180 transitions. [2022-03-03 17:13:54,387 INFO L78 Accepts]: Start accepts. Automaton has 13392 states and 38180 transitions. Word has length 177 [2022-03-03 17:13:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:54,387 INFO L470 AbstractCegarLoop]: Abstraction has 13392 states and 38180 transitions. [2022-03-03 17:13:54,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.68) internal successors, (384), 50 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 13392 states and 38180 transitions. [2022-03-03 17:13:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:54,409 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:54,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:54,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 17:13:54,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:13:54,610 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash 660843338, now seen corresponding path program 60 times [2022-03-03 17:13:54,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:54,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680016533] [2022-03-03 17:13:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:54,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:54,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:54,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680016533] [2022-03-03 17:13:54,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680016533] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:54,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:54,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:54,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294705222] [2022-03-03 17:13:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:54,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:54,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:54,948 INFO L87 Difference]: Start difference. First operand 13392 states and 38180 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:55,651 INFO L93 Difference]: Finished difference Result 19041 states and 54325 transitions. [2022-03-03 17:13:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:13:55,652 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:55,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:55,690 INFO L225 Difference]: With dead ends: 19041 [2022-03-03 17:13:55,690 INFO L226 Difference]: Without dead ends: 19041 [2022-03-03 17:13:55,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:13:55,691 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 828 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:55,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 3654 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:13:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19041 states. [2022-03-03 17:13:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19041 to 13392. [2022-03-03 17:13:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13392 states, 13391 states have (on average 2.8505712792173847) internal successors, (38172), 13391 states have internal predecessors, (38172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13392 states to 13392 states and 38172 transitions. [2022-03-03 17:13:55,953 INFO L78 Accepts]: Start accepts. Automaton has 13392 states and 38172 transitions. Word has length 177 [2022-03-03 17:13:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:55,953 INFO L470 AbstractCegarLoop]: Abstraction has 13392 states and 38172 transitions. [2022-03-03 17:13:55,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 13392 states and 38172 transitions. [2022-03-03 17:13:55,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:55,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:55,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:55,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-03 17:13:55,976 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash -866070224, now seen corresponding path program 48 times [2022-03-03 17:13:55,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:55,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875786803] [2022-03-03 17:13:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:55,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:56,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:56,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875786803] [2022-03-03 17:13:56,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875786803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:56,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:56,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:56,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521055578] [2022-03-03 17:13:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:56,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:56,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:56,313 INFO L87 Difference]: Start difference. First operand 13392 states and 38172 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:56,956 INFO L93 Difference]: Finished difference Result 18645 states and 52951 transitions. [2022-03-03 17:13:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:13:56,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:56,990 INFO L225 Difference]: With dead ends: 18645 [2022-03-03 17:13:56,990 INFO L226 Difference]: Without dead ends: 18645 [2022-03-03 17:13:56,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:13:56,991 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 817 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:56,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3180 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18645 states. [2022-03-03 17:13:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18645 to 13004. [2022-03-03 17:13:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13004 states, 13003 states have (on average 2.8334999615473353) internal successors, (36844), 13003 states have internal predecessors, (36844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 36844 transitions. [2022-03-03 17:13:57,228 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 36844 transitions. Word has length 177 [2022-03-03 17:13:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:57,228 INFO L470 AbstractCegarLoop]: Abstraction has 13004 states and 36844 transitions. [2022-03-03 17:13:57,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 36844 transitions. [2022-03-03 17:13:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:57,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:57,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:57,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-03-03 17:13:57,249 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash -664521334, now seen corresponding path program 72 times [2022-03-03 17:13:57,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:57,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881372125] [2022-03-03 17:13:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:57,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:57,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881372125] [2022-03-03 17:13:57,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881372125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:57,608 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:57,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:13:57,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821115716] [2022-03-03 17:13:57,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:57,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:13:57,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:13:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:13:57,609 INFO L87 Difference]: Start difference. First operand 13004 states and 36844 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:58,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:58,214 INFO L93 Difference]: Finished difference Result 18687 states and 53063 transitions. [2022-03-03 17:13:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:13:58,215 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:58,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:58,247 INFO L225 Difference]: With dead ends: 18687 [2022-03-03 17:13:58,247 INFO L226 Difference]: Without dead ends: 18687 [2022-03-03 17:13:58,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:13:58,248 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 836 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:58,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 3136 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18687 states. [2022-03-03 17:13:58,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18687 to 13004. [2022-03-03 17:13:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13004 states, 13003 states have (on average 2.8334999615473353) internal successors, (36844), 13003 states have internal predecessors, (36844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 36844 transitions. [2022-03-03 17:13:58,480 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 36844 transitions. Word has length 177 [2022-03-03 17:13:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:58,481 INFO L470 AbstractCegarLoop]: Abstraction has 13004 states and 36844 transitions. [2022-03-03 17:13:58,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 36844 transitions. [2022-03-03 17:13:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:58,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:58,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:58,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-03-03 17:13:58,500 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:58,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash 957238336, now seen corresponding path program 61 times [2022-03-03 17:13:58,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:58,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196076039] [2022-03-03 17:13:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:13:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:13:58,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:13:58,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196076039] [2022-03-03 17:13:58,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196076039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:13:58,857 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:13:58,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:13:58,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577293573] [2022-03-03 17:13:58,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:13:58,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:13:58,858 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:13:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:13:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:13:58,858 INFO L87 Difference]: Start difference. First operand 13004 states and 36844 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:13:59,456 INFO L93 Difference]: Finished difference Result 18911 states and 53711 transitions. [2022-03-03 17:13:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 17:13:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:13:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:13:59,492 INFO L225 Difference]: With dead ends: 18911 [2022-03-03 17:13:59,492 INFO L226 Difference]: Without dead ends: 18911 [2022-03-03 17:13:59,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:13:59,492 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1248 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:13:59,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1248 Valid, 2478 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:13:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18911 states. [2022-03-03 17:13:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18911 to 12996. [2022-03-03 17:13:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12996 states, 12995 states have (on average 2.8323201231242785) internal successors, (36806), 12995 states have internal predecessors, (36806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 36806 transitions. [2022-03-03 17:13:59,726 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 36806 transitions. Word has length 177 [2022-03-03 17:13:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:13:59,726 INFO L470 AbstractCegarLoop]: Abstraction has 12996 states and 36806 transitions. [2022-03-03 17:13:59,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:13:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 36806 transitions. [2022-03-03 17:13:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:13:59,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:13:59,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:13:59,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-03-03 17:13:59,745 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:13:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:13:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1995767108, now seen corresponding path program 73 times [2022-03-03 17:13:59,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:13:59,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950824481] [2022-03-03 17:13:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:13:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:13:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:00,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:00,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950824481] [2022-03-03 17:14:00,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950824481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:00,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:00,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-03 17:14:00,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288003501] [2022-03-03 17:14:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:00,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-03 17:14:00,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-03 17:14:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-03 17:14:00,099 INFO L87 Difference]: Start difference. First operand 12996 states and 36806 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:00,752 INFO L93 Difference]: Finished difference Result 19095 states and 54209 transitions. [2022-03-03 17:14:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:14:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:14:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:00,792 INFO L225 Difference]: With dead ends: 19095 [2022-03-03 17:14:00,792 INFO L226 Difference]: Without dead ends: 19095 [2022-03-03 17:14:00,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:14:00,793 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1224 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:00,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 3262 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:14:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19095 states. [2022-03-03 17:14:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19095 to 12996. [2022-03-03 17:14:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12996 states, 12995 states have (on average 2.8323201231242785) internal successors, (36806), 12995 states have internal predecessors, (36806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 36806 transitions. [2022-03-03 17:14:01,044 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 36806 transitions. Word has length 177 [2022-03-03 17:14:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:01,044 INFO L470 AbstractCegarLoop]: Abstraction has 12996 states and 36806 transitions. [2022-03-03 17:14:01,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 36806 transitions. [2022-03-03 17:14:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:14:01,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:01,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:01,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-03 17:14:01,064 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:01,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash -846132868, now seen corresponding path program 62 times [2022-03-03 17:14:01,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:01,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052595378] [2022-03-03 17:14:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:01,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:01,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052595378] [2022-03-03 17:14:01,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052595378] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:01,416 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:01,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:14:01,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713145528] [2022-03-03 17:14:01,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:01,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:14:01,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:01,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:14:01,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:14:01,417 INFO L87 Difference]: Start difference. First operand 12996 states and 36806 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:02,128 INFO L93 Difference]: Finished difference Result 19007 states and 53975 transitions. [2022-03-03 17:14:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 17:14:02,128 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:14:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:02,163 INFO L225 Difference]: With dead ends: 19007 [2022-03-03 17:14:02,164 INFO L226 Difference]: Without dead ends: 19007 [2022-03-03 17:14:02,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-03 17:14:02,164 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1083 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 3511 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:02,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 3511 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:14:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19007 states. [2022-03-03 17:14:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19007 to 13028. [2022-03-03 17:14:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13028 states, 13027 states have (on average 2.8321179089583173) internal successors, (36894), 13027 states have internal predecessors, (36894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13028 states to 13028 states and 36894 transitions. [2022-03-03 17:14:02,414 INFO L78 Accepts]: Start accepts. Automaton has 13028 states and 36894 transitions. Word has length 177 [2022-03-03 17:14:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:02,414 INFO L470 AbstractCegarLoop]: Abstraction has 13028 states and 36894 transitions. [2022-03-03 17:14:02,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 13028 states and 36894 transitions. [2022-03-03 17:14:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:14:02,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:02,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:02,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-03 17:14:02,434 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1354471006, now seen corresponding path program 63 times [2022-03-03 17:14:02,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:02,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541289344] [2022-03-03 17:14:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:02,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:02,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:02,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541289344] [2022-03-03 17:14:02,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541289344] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:02,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:02,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:14:02,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674187094] [2022-03-03 17:14:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:02,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:14:02,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:14:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:14:02,808 INFO L87 Difference]: Start difference. First operand 13028 states and 36894 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:03,528 INFO L93 Difference]: Finished difference Result 19871 states and 56447 transitions. [2022-03-03 17:14:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:14:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:14:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:03,563 INFO L225 Difference]: With dead ends: 19871 [2022-03-03 17:14:03,564 INFO L226 Difference]: Without dead ends: 19871 [2022-03-03 17:14:03,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2022-03-03 17:14:03,564 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1207 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:03,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 3049 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:14:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19871 states. [2022-03-03 17:14:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19871 to 12972. [2022-03-03 17:14:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 2.8306221571197288) internal successors, (36716), 12971 states have internal predecessors, (36716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 36716 transitions. [2022-03-03 17:14:03,901 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 36716 transitions. Word has length 177 [2022-03-03 17:14:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:03,901 INFO L470 AbstractCegarLoop]: Abstraction has 12972 states and 36716 transitions. [2022-03-03 17:14:03,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 36716 transitions. [2022-03-03 17:14:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:14:03,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:03,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:03,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-03 17:14:03,920 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1320257190, now seen corresponding path program 74 times [2022-03-03 17:14:03,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:03,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74483146] [2022-03-03 17:14:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:03,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:04,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:04,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74483146] [2022-03-03 17:14:04,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74483146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:04,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:04,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-03 17:14:04,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968173462] [2022-03-03 17:14:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:04,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 17:14:04,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 17:14:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:14:04,185 INFO L87 Difference]: Start difference. First operand 12972 states and 36716 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:04,835 INFO L93 Difference]: Finished difference Result 18698 states and 52842 transitions. [2022-03-03 17:14:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:14:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:14:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:04,873 INFO L225 Difference]: With dead ends: 18698 [2022-03-03 17:14:04,874 INFO L226 Difference]: Without dead ends: 18698 [2022-03-03 17:14:04,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:14:04,874 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 837 mSDsluCounter, 3837 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 4156 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:04,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 4156 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:14:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18698 states. [2022-03-03 17:14:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18698 to 12324. [2022-03-03 17:14:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12324 states, 12323 states have (on average 2.8291812058751926) internal successors, (34864), 12323 states have internal predecessors, (34864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12324 states to 12324 states and 34864 transitions. [2022-03-03 17:14:05,108 INFO L78 Accepts]: Start accepts. Automaton has 12324 states and 34864 transitions. Word has length 177 [2022-03-03 17:14:05,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:05,108 INFO L470 AbstractCegarLoop]: Abstraction has 12324 states and 34864 transitions. [2022-03-03 17:14:05,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12324 states and 34864 transitions. [2022-03-03 17:14:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 17:14:05,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:05,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:05,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-03-03 17:14:05,127 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2046167338, now seen corresponding path program 64 times [2022-03-03 17:14:05,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:05,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630717140] [2022-03-03 17:14:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:05,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:05,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630717140] [2022-03-03 17:14:05,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630717140] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:05,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215768547] [2022-03-03 17:14:05,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:14:05,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:05,414 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:14:05,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 17:14:05,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:14:05,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:14:05,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-03 17:14:05,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:06,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:14:06,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:06,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:06,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:14:06,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-03-03 17:14:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:14:06,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:14:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:07,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215768547] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:14:07,001 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:14:07,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-03-03 17:14:07,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471896201] [2022-03-03 17:14:07,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:14:07,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 17:14:07,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 17:14:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:14:07,003 INFO L87 Difference]: Start difference. First operand 12324 states and 34864 transitions. Second operand has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:10,494 INFO L93 Difference]: Finished difference Result 28639 states and 80741 transitions. [2022-03-03 17:14:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-03 17:14:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-03 17:14:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:10,561 INFO L225 Difference]: With dead ends: 28639 [2022-03-03 17:14:10,561 INFO L226 Difference]: Without dead ends: 28639 [2022-03-03 17:14:10,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2820 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2081, Invalid=9475, Unknown=0, NotChecked=0, Total=11556 [2022-03-03 17:14:10,563 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 3790 mSDsluCounter, 11654 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 11912 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 406 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:10,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3790 Valid, 11912 Invalid, 3238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2819 Invalid, 0 Unknown, 406 Unchecked, 1.1s Time] [2022-03-03 17:14:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28639 states. [2022-03-03 17:14:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28639 to 12072. [2022-03-03 17:14:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12072 states, 12071 states have (on average 2.828514621820893) internal successors, (34143), 12071 states have internal predecessors, (34143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12072 states to 12072 states and 34143 transitions. [2022-03-03 17:14:10,897 INFO L78 Accepts]: Start accepts. Automaton has 12072 states and 34143 transitions. Word has length 177 [2022-03-03 17:14:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:10,897 INFO L470 AbstractCegarLoop]: Abstraction has 12072 states and 34143 transitions. [2022-03-03 17:14:10,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 12072 states and 34143 transitions. [2022-03-03 17:14:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-03 17:14:10,916 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:10,916 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:10,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-03 17:14:11,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-03-03 17:14:11,118 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash 151786433, now seen corresponding path program 2 times [2022-03-03 17:14:11,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:11,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380103785] [2022-03-03 17:14:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:11,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:11,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380103785] [2022-03-03 17:14:11,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380103785] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:11,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557983094] [2022-03-03 17:14:11,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:14:11,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:11,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:11,290 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:14:11,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 17:14:11,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-03 17:14:11,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:14:11,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-03 17:14:11,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-03 17:14:11,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:14:11,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557983094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:11,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:14:11,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-03-03 17:14:11,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973596437] [2022-03-03 17:14:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:11,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-03 17:14:11,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-03 17:14:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-03 17:14:11,981 INFO L87 Difference]: Start difference. First operand 12072 states and 34143 transitions. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:12,373 INFO L93 Difference]: Finished difference Result 12807 states and 35812 transitions. [2022-03-03 17:14:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 17:14:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2022-03-03 17:14:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:12,399 INFO L225 Difference]: With dead ends: 12807 [2022-03-03 17:14:12,399 INFO L226 Difference]: Without dead ends: 12698 [2022-03-03 17:14:12,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:14:12,400 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 118 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:12,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1818 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2022-03-03 17:14:12,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 7124. [2022-03-03 17:14:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 2.7558612943984278) internal successors, (19630), 7123 states have internal predecessors, (19630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 19630 transitions. [2022-03-03 17:14:12,541 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 19630 transitions. Word has length 180 [2022-03-03 17:14:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:12,542 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 19630 transitions. [2022-03-03 17:14:12,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 19630 transitions. [2022-03-03 17:14:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:12,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:12,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:12,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-03 17:14:12,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-03-03 17:14:12,756 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:12,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1442899840, now seen corresponding path program 1 times [2022-03-03 17:14:12,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:12,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143577822] [2022-03-03 17:14:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:13,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:13,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143577822] [2022-03-03 17:14:13,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143577822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:13,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:13,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:14:13,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153997943] [2022-03-03 17:14:13,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:13,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:14:13,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:14:13,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:14:13,037 INFO L87 Difference]: Start difference. First operand 7124 states and 19630 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:13,649 INFO L93 Difference]: Finished difference Result 13271 states and 36321 transitions. [2022-03-03 17:14:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 17:14:13,650 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:13,673 INFO L225 Difference]: With dead ends: 13271 [2022-03-03 17:14:13,674 INFO L226 Difference]: Without dead ends: 13271 [2022-03-03 17:14:13,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2022-03-03 17:14:13,674 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1432 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:13,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 2816 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:14:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2022-03-03 17:14:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 7880. [2022-03-03 17:14:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 7879 states have (on average 2.7583449676354865) internal successors, (21733), 7879 states have internal predecessors, (21733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 21733 transitions. [2022-03-03 17:14:13,824 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 21733 transitions. Word has length 181 [2022-03-03 17:14:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:13,824 INFO L470 AbstractCegarLoop]: Abstraction has 7880 states and 21733 transitions. [2022-03-03 17:14:13,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 21733 transitions. [2022-03-03 17:14:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:13,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:13,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:13,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-03-03 17:14:13,835 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1693882528, now seen corresponding path program 1 times [2022-03-03 17:14:13,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:13,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675140612] [2022-03-03 17:14:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:13,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:13,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675140612] [2022-03-03 17:14:13,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675140612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:13,905 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:13,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:13,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087368531] [2022-03-03 17:14:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:13,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:13,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:13,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:13,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:13,906 INFO L87 Difference]: Start difference. First operand 7880 states and 21733 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:14,044 INFO L93 Difference]: Finished difference Result 10048 states and 27653 transitions. [2022-03-03 17:14:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:14:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:14,061 INFO L225 Difference]: With dead ends: 10048 [2022-03-03 17:14:14,061 INFO L226 Difference]: Without dead ends: 9991 [2022-03-03 17:14:14,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:14:14,062 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 213 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:14,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 1451 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2022-03-03 17:14:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 9164. [2022-03-03 17:14:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.768852995743752) internal successors, (25371), 9163 states have internal predecessors, (25371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 25371 transitions. [2022-03-03 17:14:14,211 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 25371 transitions. Word has length 181 [2022-03-03 17:14:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:14,211 INFO L470 AbstractCegarLoop]: Abstraction has 9164 states and 25371 transitions. [2022-03-03 17:14:14,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 25371 transitions. [2022-03-03 17:14:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:14,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:14,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:14,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-03-03 17:14:14,224 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1303549216, now seen corresponding path program 2 times [2022-03-03 17:14:14,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:14,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084218099] [2022-03-03 17:14:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:14,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:14,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:14,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084218099] [2022-03-03 17:14:14,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084218099] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:14,289 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:14,289 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:14,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018856696] [2022-03-03 17:14:14,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:14,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:14,289 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:14,290 INFO L87 Difference]: Start difference. First operand 9164 states and 25371 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:14,427 INFO L93 Difference]: Finished difference Result 9959 states and 27465 transitions. [2022-03-03 17:14:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:14:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:14,444 INFO L225 Difference]: With dead ends: 9959 [2022-03-03 17:14:14,444 INFO L226 Difference]: Without dead ends: 9902 [2022-03-03 17:14:14,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:14:14,444 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 98 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:14,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 1294 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2022-03-03 17:14:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9203. [2022-03-03 17:14:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 2.768528580743317) internal successors, (25476), 9202 states have internal predecessors, (25476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 25476 transitions. [2022-03-03 17:14:14,584 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 25476 transitions. Word has length 181 [2022-03-03 17:14:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:14,585 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 25476 transitions. [2022-03-03 17:14:14,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 25476 transitions. [2022-03-03 17:14:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:14,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:14,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:14,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-03-03 17:14:14,598 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1045782252, now seen corresponding path program 3 times [2022-03-03 17:14:14,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:14,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599383721] [2022-03-03 17:14:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:14,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:14,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:14,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599383721] [2022-03-03 17:14:14,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599383721] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:14,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:14,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:14,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342292095] [2022-03-03 17:14:14,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:14,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:14,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:14,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:14,678 INFO L87 Difference]: Start difference. First operand 9203 states and 25476 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:14,817 INFO L93 Difference]: Finished difference Result 9970 states and 27502 transitions. [2022-03-03 17:14:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:14:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:14,833 INFO L225 Difference]: With dead ends: 9970 [2022-03-03 17:14:14,833 INFO L226 Difference]: Without dead ends: 9913 [2022-03-03 17:14:14,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:14:14,833 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 85 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:14,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1538 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:14,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2022-03-03 17:14:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 9203. [2022-03-03 17:14:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 2.768528580743317) internal successors, (25476), 9202 states have internal predecessors, (25476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 25476 transitions. [2022-03-03 17:14:14,957 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 25476 transitions. Word has length 181 [2022-03-03 17:14:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:14,957 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 25476 transitions. [2022-03-03 17:14:14,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 25476 transitions. [2022-03-03 17:14:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:14,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:14,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:14,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-03-03 17:14:14,969 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash -964256132, now seen corresponding path program 4 times [2022-03-03 17:14:14,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:14,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252127100] [2022-03-03 17:14:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:15,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:15,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252127100] [2022-03-03 17:14:15,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252127100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:15,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:15,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:15,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699963917] [2022-03-03 17:14:15,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:15,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:15,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:15,039 INFO L87 Difference]: Start difference. First operand 9203 states and 25476 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:15,226 INFO L93 Difference]: Finished difference Result 11581 states and 31830 transitions. [2022-03-03 17:14:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:14:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:15,245 INFO L225 Difference]: With dead ends: 11581 [2022-03-03 17:14:15,246 INFO L226 Difference]: Without dead ends: 11524 [2022-03-03 17:14:15,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:14:15,246 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 214 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:15,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1992 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11524 states. [2022-03-03 17:14:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11524 to 10442. [2022-03-03 17:14:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 2.763528397663059) internal successors, (28854), 10441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 28854 transitions. [2022-03-03 17:14:15,411 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 28854 transitions. Word has length 181 [2022-03-03 17:14:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:15,411 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 28854 transitions. [2022-03-03 17:14:15,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 28854 transitions. [2022-03-03 17:14:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:15,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:15,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:15,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-03-03 17:14:15,425 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1597101116, now seen corresponding path program 5 times [2022-03-03 17:14:15,426 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:15,426 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890045394] [2022-03-03 17:14:15,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:15,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:15,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:15,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890045394] [2022-03-03 17:14:15,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890045394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:15,491 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:15,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:15,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438008606] [2022-03-03 17:14:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:15,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:15,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:15,492 INFO L87 Difference]: Start difference. First operand 10442 states and 28854 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:15,649 INFO L93 Difference]: Finished difference Result 11261 states and 31032 transitions. [2022-03-03 17:14:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:14:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:15,668 INFO L225 Difference]: With dead ends: 11261 [2022-03-03 17:14:15,668 INFO L226 Difference]: Without dead ends: 11204 [2022-03-03 17:14:15,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:14:15,669 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:15,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1583 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2022-03-03 17:14:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 10446. [2022-03-03 17:14:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10446 states, 10445 states have (on average 2.7635232168501673) internal successors, (28865), 10445 states have internal predecessors, (28865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:15,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10446 states to 10446 states and 28865 transitions. [2022-03-03 17:14:15,834 INFO L78 Accepts]: Start accepts. Automaton has 10446 states and 28865 transitions. Word has length 181 [2022-03-03 17:14:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:15,834 INFO L470 AbstractCegarLoop]: Abstraction has 10446 states and 28865 transitions. [2022-03-03 17:14:15,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 10446 states and 28865 transitions. [2022-03-03 17:14:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:15,849 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:15,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:15,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-03 17:14:15,850 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash 348534712, now seen corresponding path program 6 times [2022-03-03 17:14:15,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:15,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777063551] [2022-03-03 17:14:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:15,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:15,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777063551] [2022-03-03 17:14:15,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777063551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:15,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:15,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:15,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162882778] [2022-03-03 17:14:15,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:15,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:15,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:15,931 INFO L87 Difference]: Start difference. First operand 10446 states and 28865 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:16,074 INFO L93 Difference]: Finished difference Result 11201 states and 30876 transitions. [2022-03-03 17:14:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:14:16,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:16,094 INFO L225 Difference]: With dead ends: 11201 [2022-03-03 17:14:16,094 INFO L226 Difference]: Without dead ends: 11144 [2022-03-03 17:14:16,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:14:16,094 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 86 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:16,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1363 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11144 states. [2022-03-03 17:14:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11144 to 10442. [2022-03-03 17:14:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 2.763528397663059) internal successors, (28854), 10441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 28854 transitions. [2022-03-03 17:14:16,304 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 28854 transitions. Word has length 181 [2022-03-03 17:14:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:16,304 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 28854 transitions. [2022-03-03 17:14:16,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 28854 transitions. [2022-03-03 17:14:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:16,318 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:16,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:16,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-03 17:14:16,319 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash -550249376, now seen corresponding path program 1 times [2022-03-03 17:14:16,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:16,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877570701] [2022-03-03 17:14:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:16,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:16,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877570701] [2022-03-03 17:14:16,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877570701] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:16,387 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:16,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:16,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472431064] [2022-03-03 17:14:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:16,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:16,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:16,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:16,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:16,388 INFO L87 Difference]: Start difference. First operand 10442 states and 28854 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:16,569 INFO L93 Difference]: Finished difference Result 11560 states and 31789 transitions. [2022-03-03 17:14:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:14:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:16,589 INFO L225 Difference]: With dead ends: 11560 [2022-03-03 17:14:16,589 INFO L226 Difference]: Without dead ends: 11509 [2022-03-03 17:14:16,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-03 17:14:16,590 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 202 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:16,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 1882 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2022-03-03 17:14:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 10478. [2022-03-03 17:14:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10477 states have (on average 2.7634819127612866) internal successors, (28953), 10477 states have internal predecessors, (28953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 28953 transitions. [2022-03-03 17:14:16,757 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 28953 transitions. Word has length 181 [2022-03-03 17:14:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:16,757 INFO L470 AbstractCegarLoop]: Abstraction has 10478 states and 28953 transitions. [2022-03-03 17:14:16,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 28953 transitions. [2022-03-03 17:14:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:16,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:16,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:16,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-03-03 17:14:16,772 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1708434304, now seen corresponding path program 1 times [2022-03-03 17:14:16,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:16,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676246508] [2022-03-03 17:14:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:17,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:17,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676246508] [2022-03-03 17:14:17,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676246508] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:17,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347902669] [2022-03-03 17:14:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:17,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:17,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:17,764 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:14:17,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 17:14:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:18,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-03 17:14:18,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:18,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:18,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:14:18,560 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:14:18,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:14:18,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:18,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:18,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:19,722 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:14:19,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-03 17:14:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:19,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:14:20,655 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5083 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5083))) (let ((.cse5 (select .cse7 c_~get1~0.base)) (.cse4 (select .cse7 ~get2~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse1 (select .cse4 (+ c_~get2~0.offset .cse6))) (.cse0 (select .cse5 (+ c_~get1~0.offset .cse6))) (.cse3 (select .cse5 c_~get1~0.offset)) (.cse2 (select .cse4 c_~get2~0.offset))) (or (<= (+ .cse0 1) .cse1) (< .cse2 .cse3) (= .cse1 .cse0) (= .cse3 .cse2)))))) is different from false [2022-03-03 17:14:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:20,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347902669] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:20,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:14:20,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [35, 30] total 74 [2022-03-03 17:14:20,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069016639] [2022-03-03 17:14:20,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:20,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:14:20,801 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:14:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=4918, Unknown=1, NotChecked=142, Total=5402 [2022-03-03 17:14:20,802 INFO L87 Difference]: Start difference. First operand 10478 states and 28953 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:21,733 INFO L93 Difference]: Finished difference Result 14034 states and 38568 transitions. [2022-03-03 17:14:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 17:14:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:21,759 INFO L225 Difference]: With dead ends: 14034 [2022-03-03 17:14:21,759 INFO L226 Difference]: Without dead ends: 14034 [2022-03-03 17:14:21,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 322 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=481, Invalid=6494, Unknown=1, NotChecked=164, Total=7140 [2022-03-03 17:14:21,760 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 448 mSDsluCounter, 4231 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1075 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:21,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 4573 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 906 Invalid, 0 Unknown, 1075 Unchecked, 0.4s Time] [2022-03-03 17:14:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14034 states. [2022-03-03 17:14:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14034 to 10983. [2022-03-03 17:14:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10983 states, 10982 states have (on average 2.760061919504644) internal successors, (30311), 10982 states have internal predecessors, (30311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 30311 transitions. [2022-03-03 17:14:21,951 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 30311 transitions. Word has length 181 [2022-03-03 17:14:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:21,951 INFO L470 AbstractCegarLoop]: Abstraction has 10983 states and 30311 transitions. [2022-03-03 17:14:21,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 30311 transitions. [2022-03-03 17:14:21,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:21,965 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:21,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:21,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-03 17:14:22,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:22,166 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash -287180576, now seen corresponding path program 2 times [2022-03-03 17:14:22,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:22,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086099546] [2022-03-03 17:14:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:22,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:22,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086099546] [2022-03-03 17:14:22,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086099546] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:22,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:22,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:22,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638367107] [2022-03-03 17:14:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:22,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:22,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:22,247 INFO L87 Difference]: Start difference. First operand 10983 states and 30311 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:22,403 INFO L93 Difference]: Finished difference Result 11873 states and 32670 transitions. [2022-03-03 17:14:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:14:22,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:22,429 INFO L225 Difference]: With dead ends: 11873 [2022-03-03 17:14:22,429 INFO L226 Difference]: Without dead ends: 11822 [2022-03-03 17:14:22,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:14:22,430 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 88 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:22,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1486 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2022-03-03 17:14:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 10987. [2022-03-03 17:14:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10987 states, 10986 states have (on average 2.7600582559621336) internal successors, (30322), 10986 states have internal predecessors, (30322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10987 states to 10987 states and 30322 transitions. [2022-03-03 17:14:22,608 INFO L78 Accepts]: Start accepts. Automaton has 10987 states and 30322 transitions. Word has length 181 [2022-03-03 17:14:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:22,608 INFO L470 AbstractCegarLoop]: Abstraction has 10987 states and 30322 transitions. [2022-03-03 17:14:22,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10987 states and 30322 transitions. [2022-03-03 17:14:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:22,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:22,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:22,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-03-03 17:14:22,624 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1658455252, now seen corresponding path program 3 times [2022-03-03 17:14:22,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:22,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695394716] [2022-03-03 17:14:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:22,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:22,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695394716] [2022-03-03 17:14:22,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695394716] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:22,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:22,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:22,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901157240] [2022-03-03 17:14:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:22,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:22,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:22,699 INFO L87 Difference]: Start difference. First operand 10987 states and 30322 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:22,896 INFO L93 Difference]: Finished difference Result 11884 states and 32707 transitions. [2022-03-03 17:14:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:14:22,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:22,917 INFO L225 Difference]: With dead ends: 11884 [2022-03-03 17:14:22,917 INFO L226 Difference]: Without dead ends: 11833 [2022-03-03 17:14:22,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:14:22,917 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:22,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1767 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2022-03-03 17:14:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 10983. [2022-03-03 17:14:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10983 states, 10982 states have (on average 2.760061919504644) internal successors, (30311), 10982 states have internal predecessors, (30311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 30311 transitions. [2022-03-03 17:14:23,088 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 30311 transitions. Word has length 181 [2022-03-03 17:14:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:23,088 INFO L470 AbstractCegarLoop]: Abstraction has 10983 states and 30311 transitions. [2022-03-03 17:14:23,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 30311 transitions. [2022-03-03 17:14:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:23,103 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:23,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:23,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-03-03 17:14:23,103 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1851109188, now seen corresponding path program 4 times [2022-03-03 17:14:23,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:23,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364867057] [2022-03-03 17:14:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:23,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:23,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364867057] [2022-03-03 17:14:23,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364867057] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:23,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:23,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:23,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474688297] [2022-03-03 17:14:23,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:23,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:23,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:23,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:23,183 INFO L87 Difference]: Start difference. First operand 10983 states and 30311 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:23,348 INFO L93 Difference]: Finished difference Result 12395 states and 34045 transitions. [2022-03-03 17:14:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-03 17:14:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:23,369 INFO L225 Difference]: With dead ends: 12395 [2022-03-03 17:14:23,370 INFO L226 Difference]: Without dead ends: 12344 [2022-03-03 17:14:23,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-03 17:14:23,370 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 208 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:23,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1693 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2022-03-03 17:14:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 11022. [2022-03-03 17:14:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11022 states, 11021 states have (on average 2.7598221576989386) internal successors, (30416), 11021 states have internal predecessors, (30416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11022 states to 11022 states and 30416 transitions. [2022-03-03 17:14:23,539 INFO L78 Accepts]: Start accepts. Automaton has 11022 states and 30416 transitions. Word has length 181 [2022-03-03 17:14:23,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:23,539 INFO L470 AbstractCegarLoop]: Abstraction has 11022 states and 30416 transitions. [2022-03-03 17:14:23,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 11022 states and 30416 transitions. [2022-03-03 17:14:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:23,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:23,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:23,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-03 17:14:23,554 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2074947418, now seen corresponding path program 5 times [2022-03-03 17:14:23,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:23,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115834638] [2022-03-03 17:14:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:23,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:23,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115834638] [2022-03-03 17:14:23,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115834638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:23,624 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:23,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:23,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878486408] [2022-03-03 17:14:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:23,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:23,624 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:23,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:23,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:23,624 INFO L87 Difference]: Start difference. First operand 11022 states and 30416 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:23,757 INFO L93 Difference]: Finished difference Result 11963 states and 32940 transitions. [2022-03-03 17:14:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:14:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:23,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:23,777 INFO L225 Difference]: With dead ends: 11963 [2022-03-03 17:14:23,777 INFO L226 Difference]: Without dead ends: 11912 [2022-03-03 17:14:23,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:14:23,777 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 104 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:23,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1332 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11912 states. [2022-03-03 17:14:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11912 to 11026. [2022-03-03 17:14:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11026 states, 11025 states have (on average 2.7598185941043085) internal successors, (30427), 11025 states have internal predecessors, (30427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11026 states to 11026 states and 30427 transitions. [2022-03-03 17:14:23,945 INFO L78 Accepts]: Start accepts. Automaton has 11026 states and 30427 transitions. Word has length 181 [2022-03-03 17:14:23,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:23,945 INFO L470 AbstractCegarLoop]: Abstraction has 11026 states and 30427 transitions. [2022-03-03 17:14:23,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 11026 states and 30427 transitions. [2022-03-03 17:14:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:23,961 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:23,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:23,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-03 17:14:23,961 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash -129311590, now seen corresponding path program 6 times [2022-03-03 17:14:23,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:23,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807374137] [2022-03-03 17:14:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:24,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:24,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807374137] [2022-03-03 17:14:24,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807374137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:24,027 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:24,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:14:24,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143395842] [2022-03-03 17:14:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:24,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:14:24,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:14:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:14:24,027 INFO L87 Difference]: Start difference. First operand 11026 states and 30427 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:24,170 INFO L93 Difference]: Finished difference Result 11903 states and 32784 transitions. [2022-03-03 17:14:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-03 17:14:24,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:24,190 INFO L225 Difference]: With dead ends: 11903 [2022-03-03 17:14:24,191 INFO L226 Difference]: Without dead ends: 11852 [2022-03-03 17:14:24,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:14:24,191 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 86 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:24,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1352 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:14:24,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2022-03-03 17:14:24,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 11022. [2022-03-03 17:14:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11022 states, 11021 states have (on average 2.7598221576989386) internal successors, (30416), 11021 states have internal predecessors, (30416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11022 states to 11022 states and 30416 transitions. [2022-03-03 17:14:24,357 INFO L78 Accepts]: Start accepts. Automaton has 11022 states and 30416 transitions. Word has length 181 [2022-03-03 17:14:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:24,357 INFO L470 AbstractCegarLoop]: Abstraction has 11022 states and 30416 transitions. [2022-03-03 17:14:24,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11022 states and 30416 transitions. [2022-03-03 17:14:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:24,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:24,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:24,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-03 17:14:24,378 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -78730224, now seen corresponding path program 2 times [2022-03-03 17:14:24,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:24,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742606027] [2022-03-03 17:14:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:25,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:25,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742606027] [2022-03-03 17:14:25,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742606027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:25,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200325932] [2022-03-03 17:14:25,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:14:25,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:25,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:25,349 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:14:25,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 17:14:25,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-03 17:14:25,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:14:25,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-03 17:14:25,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:27,148 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:14:27,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-03 17:14:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:27,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:14:27,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200325932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:27,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:14:27,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 47 [2022-03-03 17:14:27,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042116965] [2022-03-03 17:14:27,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:27,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:14:27,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:14:27,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:14:27,192 INFO L87 Difference]: Start difference. First operand 11022 states and 30416 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:28,988 INFO L93 Difference]: Finished difference Result 18909 states and 51862 transitions. [2022-03-03 17:14:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:14:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:29,021 INFO L225 Difference]: With dead ends: 18909 [2022-03-03 17:14:29,022 INFO L226 Difference]: Without dead ends: 18909 [2022-03-03 17:14:29,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=853, Invalid=5467, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:14:29,023 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1421 mSDsluCounter, 5373 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 5711 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:29,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 5711 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1471 Invalid, 0 Unknown, 140 Unchecked, 0.6s Time] [2022-03-03 17:14:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2022-03-03 17:14:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 11360. [2022-03-03 17:14:29,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11360 states, 11359 states have (on average 2.7644158816797253) internal successors, (31401), 11359 states have internal predecessors, (31401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11360 states to 11360 states and 31401 transitions. [2022-03-03 17:14:29,259 INFO L78 Accepts]: Start accepts. Automaton has 11360 states and 31401 transitions. Word has length 181 [2022-03-03 17:14:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:29,260 INFO L470 AbstractCegarLoop]: Abstraction has 11360 states and 31401 transitions. [2022-03-03 17:14:29,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 11360 states and 31401 transitions. [2022-03-03 17:14:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:29,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:29,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:29,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 17:14:29,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2022-03-03 17:14:29,478 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash -909661620, now seen corresponding path program 2 times [2022-03-03 17:14:29,479 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:29,479 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435109566] [2022-03-03 17:14:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:29,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:29,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:29,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435109566] [2022-03-03 17:14:29,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435109566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:29,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:29,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:14:29,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000796243] [2022-03-03 17:14:29,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:29,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:14:29,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:14:29,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:14:29,813 INFO L87 Difference]: Start difference. First operand 11360 states and 31401 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:30,623 INFO L93 Difference]: Finished difference Result 18016 states and 49747 transitions. [2022-03-03 17:14:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 17:14:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:30,654 INFO L225 Difference]: With dead ends: 18016 [2022-03-03 17:14:30,654 INFO L226 Difference]: Without dead ends: 18016 [2022-03-03 17:14:30,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2022-03-03 17:14:30,654 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1291 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:30,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 3327 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:14:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18016 states. [2022-03-03 17:14:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18016 to 11364. [2022-03-03 17:14:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 11363 states have (on average 2.764762826718296) internal successors, (31416), 11363 states have internal predecessors, (31416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 31416 transitions. [2022-03-03 17:14:30,866 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 31416 transitions. Word has length 181 [2022-03-03 17:14:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:30,866 INFO L470 AbstractCegarLoop]: Abstraction has 11364 states and 31416 transitions. [2022-03-03 17:14:30,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 31416 transitions. [2022-03-03 17:14:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:30,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:30,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:30,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-03-03 17:14:30,882 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash 185790988, now seen corresponding path program 3 times [2022-03-03 17:14:30,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:30,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054686375] [2022-03-03 17:14:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:30,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:31,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:31,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054686375] [2022-03-03 17:14:31,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054686375] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:31,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062680425] [2022-03-03 17:14:31,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:14:31,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:31,798 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:14:31,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 17:14:32,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-03 17:14:32,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:14:32,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-03 17:14:32,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:33,044 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:14:33,044 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-03 17:14:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:33,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:14:33,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062680425] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:33,086 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:14:33,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 48 [2022-03-03 17:14:33,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995812827] [2022-03-03 17:14:33,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:33,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:14:33,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:14:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:14:33,087 INFO L87 Difference]: Start difference. First operand 11364 states and 31416 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:34,685 INFO L93 Difference]: Finished difference Result 18596 states and 51341 transitions. [2022-03-03 17:14:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 17:14:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:34,720 INFO L225 Difference]: With dead ends: 18596 [2022-03-03 17:14:34,720 INFO L226 Difference]: Without dead ends: 18596 [2022-03-03 17:14:34,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=712, Invalid=4988, Unknown=0, NotChecked=0, Total=5700 [2022-03-03 17:14:34,721 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 1334 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 4347 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:34,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 4347 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 963 Invalid, 0 Unknown, 354 Unchecked, 0.4s Time] [2022-03-03 17:14:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18596 states. [2022-03-03 17:14:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18596 to 11365. [2022-03-03 17:14:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11365 states, 11364 states have (on average 2.7647835269271384) internal successors, (31419), 11364 states have internal predecessors, (31419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11365 states to 11365 states and 31419 transitions. [2022-03-03 17:14:34,942 INFO L78 Accepts]: Start accepts. Automaton has 11365 states and 31419 transitions. Word has length 181 [2022-03-03 17:14:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:34,943 INFO L470 AbstractCegarLoop]: Abstraction has 11365 states and 31419 transitions. [2022-03-03 17:14:34,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 11365 states and 31419 transitions. [2022-03-03 17:14:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:34,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:34,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:34,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-03 17:14:35,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:35,159 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:35,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1218567710, now seen corresponding path program 3 times [2022-03-03 17:14:35,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:35,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718845612] [2022-03-03 17:14:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:35,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:35,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:35,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718845612] [2022-03-03 17:14:35,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718845612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:14:35,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:14:35,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-03 17:14:35,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918943989] [2022-03-03 17:14:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:35,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-03 17:14:35,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:35,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-03 17:14:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:14:35,435 INFO L87 Difference]: Start difference. First operand 11365 states and 31419 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:14:36,095 INFO L93 Difference]: Finished difference Result 17744 states and 48934 transitions. [2022-03-03 17:14:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-03 17:14:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-03 17:14:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:14:36,126 INFO L225 Difference]: With dead ends: 17744 [2022-03-03 17:14:36,126 INFO L226 Difference]: Without dead ends: 17744 [2022-03-03 17:14:36,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 17:14:36,126 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 936 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:36,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 3079 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:14:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17744 states. [2022-03-03 17:14:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17744 to 11431. [2022-03-03 17:14:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11430 states have (on average 2.7646544181977255) internal successors, (31600), 11430 states have internal predecessors, (31600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 31600 transitions. [2022-03-03 17:14:36,336 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 31600 transitions. Word has length 181 [2022-03-03 17:14:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:14:36,336 INFO L470 AbstractCegarLoop]: Abstraction has 11431 states and 31600 transitions. [2022-03-03 17:14:36,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:14:36,336 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 31600 transitions. [2022-03-03 17:14:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-03 17:14:36,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:14:36,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:36,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-03-03 17:14:36,352 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:14:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:14:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash 891145984, now seen corresponding path program 4 times [2022-03-03 17:14:36,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:14:36,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392921440] [2022-03-03 17:14:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:14:36,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:14:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:14:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:14:37,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:14:37,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392921440] [2022-03-03 17:14:37,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392921440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:37,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689302672] [2022-03-03 17:14:37,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:14:37,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:37,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:14:37,113 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:14:37,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 17:14:37,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:14:37,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:14:37,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-03 17:14:37,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:14:37,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-03 17:14:38,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:38,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:14:38,748 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-03 17:14:38,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-03 17:14:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:14:38,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:14:39,699 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5295 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5295))) (let ((.cse4 (select .cse7 c_~get2~0.base)) (.cse5 (select .cse7 ~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse5 (+ c_~get1~0.offset .cse6))) (.cse2 (select .cse4 (+ c_~get2~0.offset .cse6))) (.cse1 (select .cse5 c_~get1~0.offset)) (.cse0 (select .cse4 c_~get2~0.offset))) (or (<= (+ .cse0 1) .cse1) (= .cse2 .cse3) (< .cse3 .cse2) (= .cse1 .cse0)))))) is different from false [2022-03-03 17:14:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:14:39,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689302672] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:14:39,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:14:39,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 29] total 65 [2022-03-03 17:14:39,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808147626] [2022-03-03 17:14:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:14:39,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 17:14:39,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:14:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 17:14:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3746, Unknown=1, NotChecked=124, Total=4160 [2022-03-03 17:14:39,853 INFO L87 Difference]: Start difference. First operand 11431 states and 31600 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-03 17:14:53,680 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:14:53,692 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 17:14:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 17:14:54,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 323 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=324, Invalid=4090, Unknown=12, NotChecked=130, Total=4556 [2022-03-03 17:14:54,159 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 57 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:14:54,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 2198 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 331 Invalid, 0 Unknown, 272 Unchecked, 0.2s Time] [2022-03-03 17:14:54,160 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 17:14:54,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-03 17:14:54,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:14:54,360 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (11431states) and FLOYD_HOARE automaton (currently 12 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 known predicates. [2022-03-03 17:14:54,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 17:14:54,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 17:14:54,364 INFO L732 BasicCegarLoop]: Path program histogram: [74, 64, 48, 37, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:14:54,366 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 17:14:54,366 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 17:14:54,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 05:14:54 BasicIcfg [2022-03-03 17:14:54,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 17:14:54,368 INFO L158 Benchmark]: Toolchain (without parser) took 700379.68ms. Allocated memory was 181.4MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 125.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.64ms. Allocated memory is still 181.4MB. Free memory was 125.3MB in the beginning and 149.4MB in the end (delta: -24.1MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.54ms. Allocated memory is still 181.4MB. Free memory was 149.4MB in the beginning and 147.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L158 Benchmark]: Boogie Preprocessor took 44.46ms. Allocated memory is still 181.4MB. Free memory was 147.8MB in the beginning and 146.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L158 Benchmark]: RCFGBuilder took 426.68ms. Allocated memory is still 181.4MB. Free memory was 145.7MB in the beginning and 127.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L158 Benchmark]: TraceAbstraction took 699590.38ms. Allocated memory was 181.4MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 127.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-03-03 17:14:54,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 272.64ms. Allocated memory is still 181.4MB. Free memory was 125.3MB in the beginning and 149.4MB in the end (delta: -24.1MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.54ms. Allocated memory is still 181.4MB. Free memory was 149.4MB in the beginning and 147.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.46ms. Allocated memory is still 181.4MB. Free memory was 147.8MB in the beginning and 146.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 426.68ms. Allocated memory is still 181.4MB. Free memory was 145.7MB in the beginning and 127.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 699590.38ms. Allocated memory was 181.4MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 127.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11431states) and FLOYD_HOARE automaton (currently 12 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 known predicates. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11431states) and FLOYD_HOARE automaton (currently 12 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 known predicates. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11431states) and FLOYD_HOARE automaton (currently 12 states, 16 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 68 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 292 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 699.4s, OverallIterations: 275, TraceHistogramMax: 2, PathProgramHistogramMax: 74, EmptinessCheckTime: 6.5s, AutomataDifference: 362.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339397 SdHoareTripleChecker+Valid, 116.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339397 mSDsluCounter, 1057718 SdHoareTripleChecker+Invalid, 96.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 36651 IncrementalHoareTripleChecker+Unchecked, 979485 mSDsCounter, 5446 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284927 IncrementalHoareTripleChecker+Invalid, 327024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5446 mSolverCounterUnsat, 101428 mSDtfsCounter, 284927 mSolverCounterSat, 2.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29423 GetRequests, 17214 SyntacticMatches, 203 SemanticMatches, 12005 ConstructedPredicates, 18 IntricatePredicates, 29 DeprecatedPredicates, 155263 ImplicationChecksByTransitivity, 264.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19867occurred in iteration=163, InterpolantAutomatonStates: 7250, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 92.4s AutomataMinimizationTime, 274 MinimizatonAttempts, 2839505 StatesRemovedByMinimization, 270 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 212.8s InterpolantComputationTime, 56828 NumberOfCodeBlocks, 56595 NumberOfCodeBlocksAsserted, 355 NumberOfCheckSat, 64684 ConstructedInterpolants, 660 QuantifiedInterpolants, 367554 SizeOfPredicates, 1235 NumberOfNonLiveVariables, 18341 ConjunctsInSsa, 2429 ConjunctsInUnsatCore, 374 InterpolantComputations, 236 PerfectInterpolantSequences, 822/1022 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown