/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/popl20-queue-add-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 16:11:52,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 16:11:52,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 16:11:52,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-01 16:11:52,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-01 16:11:52,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-01 16:11:52,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-01 16:11:53,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-01 16:11:53,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-01 16:11:53,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-01 16:11:53,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-01 16:11:53,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-01 16:11:53,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 16:11:53,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 16:11:53,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 16:11:53,038 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 [2022-03-01 16:11:53,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 16:11:53,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 16:11:53,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 16:11:53,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 16:11:53,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 16:11:53,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 16:11:53,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 16:11:53,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 16:11:53,068 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 16:11:53,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 16:11:53,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 16:11:53,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:11:53,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 16:11:53,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 16:11:53,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 16:11:53,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 16:11:53,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 16:11:53,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 16:11:53,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 16:11:53,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 16:11:53,286 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 16:11:53,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2022-03-01 16:11:53,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6276a4f8b/7e5756f2047f4cba8ebce3a6592b6f7b/FLAG2aa2314c0 [2022-03-01 16:11:53,706 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 16:11:53,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2022-03-01 16:11:53,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6276a4f8b/7e5756f2047f4cba8ebce3a6592b6f7b/FLAG2aa2314c0 [2022-03-01 16:11:54,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6276a4f8b/7e5756f2047f4cba8ebce3a6592b6f7b [2022-03-01 16:11:54,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 16:11:54,134 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 16:11:54,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 16:11:54,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 16:11:54,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 16:11:54,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717c0747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54, skipping insertion in model container [2022-03-01 16:11:54,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 16:11:54,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 16:11:54,313 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/popl20-queue-add-3.wvr.c[3412,3425] [2022-03-01 16:11:54,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:11:54,338 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 16:11:54,365 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/popl20-queue-add-3.wvr.c[3412,3425] [2022-03-01 16:11:54,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:11:54,385 INFO L208 MainTranslator]: Completed translation [2022-03-01 16:11:54,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54 WrapperNode [2022-03-01 16:11:54,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 16:11:54,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 16:11:54,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 16:11:54,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 16:11:54,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,414 INFO L137 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 245 [2022-03-01 16:11:54,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 16:11:54,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 16:11:54,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 16:11:54,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 16:11:54,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 16:11:54,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 16:11:54,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 16:11:54,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 16:11:54,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (1/1) ... [2022-03-01 16:11:54,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:11:54,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:11:54,474 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) [2022-03-01 16:11:54,491 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 [2022-03-01 16:11:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 16:11:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 16:11:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 16:11:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 16:11:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 16:11:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 16:11:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-01 16:11:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 16:11:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 16:11:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 16:11:54,528 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 16:11:54,599 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 16:11:54,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 16:11:54,973 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 16:11:55,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 16:11:55,043 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-01 16:11:55,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:11:55 BoogieIcfgContainer [2022-03-01 16:11:55,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 16:11:55,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 16:11:55,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 16:11:55,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 16:11:55,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 04:11:54" (1/3) ... [2022-03-01 16:11:55,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf8b846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:11:55, skipping insertion in model container [2022-03-01 16:11:55,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:54" (2/3) ... [2022-03-01 16:11:55,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf8b846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:11:55, skipping insertion in model container [2022-03-01 16:11:55,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:11:55" (3/3) ... [2022-03-01 16:11:55,052 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2022-03-01 16:11:55,056 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 16:11:55,057 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 16:11:55,057 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 16:11:55,057 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 16:11:55,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,109 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,110 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,112 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,113 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,114 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,115 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,116 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,117 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,118 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,119 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,119 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,123 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,124 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,124 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,124 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,124 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,124 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,124 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,125 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,126 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,127 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:55,134 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-01 16:11:55,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 16:11:55,193 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 [2022-03-01 16:11:55,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-01 16:11:55,207 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 203 places, 211 transitions, 446 flow [2022-03-01 16:11:55,383 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3854 states, 3853 states have (on average 3.975084349857254) internal successors, (15316), 3853 states have internal predecessors, (15316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 3854 states, 3853 states have (on average 3.975084349857254) internal successors, (15316), 3853 states have internal predecessors, (15316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-03-01 16:11:55,434 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:55,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:55,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 699025302, now seen corresponding path program 1 times [2022-03-01 16:11:55,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:55,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034762384] [2022-03-01 16:11:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:11:55,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:55,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034762384] [2022-03-01 16:11:55,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034762384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:55,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:55,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 16:11:55,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462502914] [2022-03-01 16:11:55,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:55,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 16:11:55,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:55,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 16:11:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:11:55,680 INFO L87 Difference]: Start difference. First operand has 3854 states, 3853 states have (on average 3.975084349857254) internal successors, (15316), 3853 states have internal predecessors, (15316), 0 states have call successors, (0), 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 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:55,768 INFO L93 Difference]: Finished difference Result 3854 states and 13372 transitions. [2022-03-01 16:11:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 16:11:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-03-01 16:11:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:55,817 INFO L225 Difference]: With dead ends: 3854 [2022-03-01 16:11:55,817 INFO L226 Difference]: Without dead ends: 3848 [2022-03-01 16:11:55,819 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 [2022-03-01 16:11:55,822 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:55,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2022-03-01 16:11:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3848. [2022-03-01 16:11:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.4743956329607486) internal successors, (13366), 3847 states have internal predecessors, (13366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 13366 transitions. [2022-03-01 16:11:56,032 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 13366 transitions. Word has length 150 [2022-03-01 16:11:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:56,032 INFO L470 AbstractCegarLoop]: Abstraction has 3848 states and 13366 transitions. [2022-03-01 16:11:56,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 13366 transitions. [2022-03-01 16:11:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-03-01 16:11:56,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:56,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:56,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 16:11:56,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:56,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1609890179, now seen corresponding path program 1 times [2022-03-01 16:11:56,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:56,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281033441] [2022-03-01 16:11:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:11:56,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:56,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281033441] [2022-03-01 16:11:56,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281033441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:56,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:56,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 16:11:56,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824066334] [2022-03-01 16:11:56,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:56,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:11:56,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:11:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:11:56,211 INFO L87 Difference]: Start difference. First operand 3848 states and 13366 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:56,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:56,354 INFO L93 Difference]: Finished difference Result 4382 states and 14854 transitions. [2022-03-01 16:11:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 16:11:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-03-01 16:11:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:56,374 INFO L225 Difference]: With dead ends: 4382 [2022-03-01 16:11:56,375 INFO L226 Difference]: Without dead ends: 3854 [2022-03-01 16:11:56,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-01 16:11:56,376 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 113 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:56,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 577 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:11:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2022-03-01 16:11:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3849. [2022-03-01 16:11:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3848 states have (on average 3.473752598752599) internal successors, (13367), 3848 states have internal predecessors, (13367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 13367 transitions. [2022-03-01 16:11:56,480 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 13367 transitions. Word has length 157 [2022-03-01 16:11:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:56,482 INFO L470 AbstractCegarLoop]: Abstraction has 3849 states and 13367 transitions. [2022-03-01 16:11:56,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 13367 transitions. [2022-03-01 16:11:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-01 16:11:56,523 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:56,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:56,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 16:11:56,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1014935693, now seen corresponding path program 1 times [2022-03-01 16:11:56,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:56,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325296208] [2022-03-01 16:11:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:11:56,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:56,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325296208] [2022-03-01 16:11:56,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325296208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:56,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:56,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 16:11:56,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177510153] [2022-03-01 16:11:56,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:56,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 16:11:56,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:56,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 16:11:56,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-01 16:11:56,643 INFO L87 Difference]: Start difference. First operand 3849 states and 13367 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 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) [2022-03-01 16:11:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:56,747 INFO L93 Difference]: Finished difference Result 4686 states and 15776 transitions. [2022-03-01 16:11:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:11:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 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 [2022-03-01 16:11:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:56,768 INFO L225 Difference]: With dead ends: 4686 [2022-03-01 16:11:56,768 INFO L226 Difference]: Without dead ends: 3855 [2022-03-01 16:11:56,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-01 16:11:56,773 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 369 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:56,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 520 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:11:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-03-01 16:11:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3850. [2022-03-01 16:11:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 3.4731098986749807) internal successors, (13368), 3849 states have internal predecessors, (13368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 13368 transitions. [2022-03-01 16:11:56,870 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 13368 transitions. Word has length 164 [2022-03-01 16:11:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:56,871 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 13368 transitions. [2022-03-01 16:11:56,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 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) [2022-03-01 16:11:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 13368 transitions. [2022-03-01 16:11:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-01 16:11:56,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:56,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:56,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 16:11:56,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2100480242, now seen corresponding path program 1 times [2022-03-01 16:11:56,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:56,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227896397] [2022-03-01 16:11:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:56,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:11:57,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:57,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227896397] [2022-03-01 16:11:57,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227896397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:57,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:57,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 16:11:57,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791219401] [2022-03-01 16:11:57,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:57,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 16:11:57,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 16:11:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:11:57,072 INFO L87 Difference]: Start difference. First operand 3850 states and 13368 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:57,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:57,141 INFO L93 Difference]: Finished difference Result 3982 states and 13786 transitions. [2022-03-01 16:11:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 16:11:57,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-03-01 16:11:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:57,175 INFO L225 Difference]: With dead ends: 3982 [2022-03-01 16:11:57,175 INFO L226 Difference]: Without dead ends: 3982 [2022-03-01 16:11:57,175 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 [2022-03-01 16:11:57,179 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 15 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:57,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 248 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2022-03-01 16:11:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3982. [2022-03-01 16:11:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3981 states have (on average 3.462949007786988) internal successors, (13786), 3981 states have internal predecessors, (13786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 13786 transitions. [2022-03-01 16:11:57,269 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 13786 transitions. Word has length 171 [2022-03-01 16:11:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:57,271 INFO L470 AbstractCegarLoop]: Abstraction has 3982 states and 13786 transitions. [2022-03-01 16:11:57,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 13786 transitions. [2022-03-01 16:11:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-01 16:11:57,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:57,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:57,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 16:11:57,281 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:57,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1516867792, now seen corresponding path program 2 times [2022-03-01 16:11:57,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:57,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107607790] [2022-03-01 16:11:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:11:57,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:57,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107607790] [2022-03-01 16:11:57,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107607790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:57,479 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:57,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 16:11:57,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505548689] [2022-03-01 16:11:57,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:57,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 16:11:57,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:57,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 16:11:57,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:11:57,481 INFO L87 Difference]: Start difference. First operand 3982 states and 13786 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:57,523 INFO L93 Difference]: Finished difference Result 4060 states and 13764 transitions. [2022-03-01 16:11:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 16:11:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-03-01 16:11:57,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:57,535 INFO L225 Difference]: With dead ends: 4060 [2022-03-01 16:11:57,536 INFO L226 Difference]: Without dead ends: 4060 [2022-03-01 16:11:57,536 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 [2022-03-01 16:11:57,536 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:57,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 225 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2022-03-01 16:11:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 4060. [2022-03-01 16:11:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 4059 states have (on average 3.3909830007390984) internal successors, (13764), 4059 states have internal predecessors, (13764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 13764 transitions. [2022-03-01 16:11:57,654 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 13764 transitions. Word has length 171 [2022-03-01 16:11:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:57,655 INFO L470 AbstractCegarLoop]: Abstraction has 4060 states and 13764 transitions. [2022-03-01 16:11:57,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 13764 transitions. [2022-03-01 16:11:57,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-03-01 16:11:57,665 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:57,665 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] [2022-03-01 16:11:57,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 16:11:57,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2107996668, now seen corresponding path program 3 times [2022-03-01 16:11:57,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:57,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302069627] [2022-03-01 16:11:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:11:57,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:57,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302069627] [2022-03-01 16:11:57,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302069627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:57,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:57,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-01 16:11:57,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346067030] [2022-03-01 16:11:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:57,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 16:11:57,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 16:11:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-01 16:11:57,948 INFO L87 Difference]: Start difference. First operand 4060 states and 13764 transitions. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:58,168 INFO L93 Difference]: Finished difference Result 7163 states and 24194 transitions. [2022-03-01 16:11:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 16:11:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-03-01 16:11:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:58,190 INFO L225 Difference]: With dead ends: 7163 [2022-03-01 16:11:58,191 INFO L226 Difference]: Without dead ends: 6788 [2022-03-01 16:11:58,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-01 16:11:58,193 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 352 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:58,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1197 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:11:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6788 states. [2022-03-01 16:11:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6788 to 5089. [2022-03-01 16:11:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 3.3294025157232703) internal successors, (16940), 5088 states have internal predecessors, (16940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 16940 transitions. [2022-03-01 16:11:58,324 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 16940 transitions. Word has length 171 [2022-03-01 16:11:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:58,325 INFO L470 AbstractCegarLoop]: Abstraction has 5089 states and 16940 transitions. [2022-03-01 16:11:58,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 16940 transitions. [2022-03-01 16:11:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-03-01 16:11:58,335 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:58,335 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2022-03-01 16:11:58,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 16:11:58,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash 11808264, now seen corresponding path program 1 times [2022-03-01 16:11:58,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:58,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561709974] [2022-03-01 16:11:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-01 16:11:58,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:58,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561709974] [2022-03-01 16:11:58,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561709974] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:58,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:58,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 16:11:58,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754108928] [2022-03-01 16:11:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:58,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 16:11:58,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 16:11:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 16:11:58,473 INFO L87 Difference]: Start difference. First operand 5089 states and 16940 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:58,562 INFO L93 Difference]: Finished difference Result 11269 states and 38535 transitions. [2022-03-01 16:11:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 16:11:58,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-03-01 16:11:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:58,597 INFO L225 Difference]: With dead ends: 11269 [2022-03-01 16:11:58,598 INFO L226 Difference]: Without dead ends: 10735 [2022-03-01 16:11:58,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-01 16:11:58,600 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 180 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:58,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 340 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2022-03-01 16:11:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 8593. [2022-03-01 16:11:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8593 states, 8592 states have (on average 3.451117318435754) internal successors, (29652), 8592 states have internal predecessors, (29652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8593 states to 8593 states and 29652 transitions. [2022-03-01 16:11:58,825 INFO L78 Accepts]: Start accepts. Automaton has 8593 states and 29652 transitions. Word has length 175 [2022-03-01 16:11:58,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:58,825 INFO L470 AbstractCegarLoop]: Abstraction has 8593 states and 29652 transitions. [2022-03-01 16:11:58,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:11:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8593 states and 29652 transitions. [2022-03-01 16:11:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-03-01 16:11:58,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:58,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:58,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-01 16:11:58,846 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:11:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1422100183, now seen corresponding path program 1 times [2022-03-01 16:11:58,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:58,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565408392] [2022-03-01 16:11:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:58,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:11:58,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:58,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565408392] [2022-03-01 16:11:58,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565408392] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:11:58,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478797237] [2022-03-01 16:11:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:58,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:11:58,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:11:58,981 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) [2022-03-01 16:11:59,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 16:11:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:59,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-01 16:11:59,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:11:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:11:59,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:11:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:11:59,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478797237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:11:59,947 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:11:59,947 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 16:11:59,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947793661] [2022-03-01 16:11:59,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:11:59,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:11:59,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:11:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:11:59,948 INFO L87 Difference]: Start difference. First operand 8593 states and 29652 transitions. Second operand has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:00,267 INFO L93 Difference]: Finished difference Result 16412 states and 55817 transitions. [2022-03-01 16:12:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-01 16:12:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-03-01 16:12:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:00,306 INFO L225 Difference]: With dead ends: 16412 [2022-03-01 16:12:00,307 INFO L226 Difference]: Without dead ends: 12332 [2022-03-01 16:12:00,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2022-03-01 16:12:00,308 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 765 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:00,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 1502 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:12:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12332 states. [2022-03-01 16:12:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12332 to 8769. [2022-03-01 16:12:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8769 states, 8768 states have (on average 3.4274635036496353) internal successors, (30052), 8768 states have internal predecessors, (30052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8769 states to 8769 states and 30052 transitions. [2022-03-01 16:12:00,589 INFO L78 Accepts]: Start accepts. Automaton has 8769 states and 30052 transitions. Word has length 176 [2022-03-01 16:12:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:00,590 INFO L470 AbstractCegarLoop]: Abstraction has 8769 states and 30052 transitions. [2022-03-01 16:12:00,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 8769 states and 30052 transitions. [2022-03-01 16:12:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-01 16:12:00,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:00,609 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] [2022-03-01 16:12:00,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:00,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:00,828 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash -400780801, now seen corresponding path program 1 times [2022-03-01 16:12:00,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:00,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911557326] [2022-03-01 16:12:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:00,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:00,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:00,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911557326] [2022-03-01 16:12:00,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911557326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:00,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529978261] [2022-03-01 16:12:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:00,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:00,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:00,906 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) [2022-03-01 16:12:00,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 16:12:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:01,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-01 16:12:01,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:01,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:01,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529978261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:01,742 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:01,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-03-01 16:12:01,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585235884] [2022-03-01 16:12:01,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:01,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-01 16:12:01,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-01 16:12:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-01 16:12:01,744 INFO L87 Difference]: Start difference. First operand 8769 states and 30052 transitions. Second operand has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:02,091 INFO L93 Difference]: Finished difference Result 14007 states and 46931 transitions. [2022-03-01 16:12:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 16:12:02,092 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have 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 [2022-03-01 16:12:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:02,125 INFO L225 Difference]: With dead ends: 14007 [2022-03-01 16:12:02,126 INFO L226 Difference]: Without dead ends: 11589 [2022-03-01 16:12:02,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-03-01 16:12:02,128 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 658 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:02,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1534 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:12:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11589 states. [2022-03-01 16:12:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11589 to 10448. [2022-03-01 16:12:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10448 states, 10447 states have (on average 3.395520245046425) internal successors, (35473), 10447 states have internal predecessors, (35473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10448 states to 10448 states and 35473 transitions. [2022-03-01 16:12:02,390 INFO L78 Accepts]: Start accepts. Automaton has 10448 states and 35473 transitions. Word has length 180 [2022-03-01 16:12:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:02,390 INFO L470 AbstractCegarLoop]: Abstraction has 10448 states and 35473 transitions. [2022-03-01 16:12:02,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.473684210526315) internal successors, (237), 19 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 10448 states and 35473 transitions. [2022-03-01 16:12:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-01 16:12:02,412 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:02,412 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, 1, 1, 1] [2022-03-01 16:12:02,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:02,625 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,SelfDestructingSolverStorable8 [2022-03-01 16:12:02,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2011759303, now seen corresponding path program 2 times [2022-03-01 16:12:02,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:02,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988992809] [2022-03-01 16:12:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:03,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:03,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988992809] [2022-03-01 16:12:03,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988992809] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:03,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873005568] [2022-03-01 16:12:03,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:12:03,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:03,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:03,056 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) [2022-03-01 16:12:03,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 16:12:03,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:12:03,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:03,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-01 16:12:03,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:04,149 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-01 16:12:04,149 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 23 treesize of output 10 [2022-03-01 16:12:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:04,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:04,458 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-01 16:12:04,459 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 25 treesize of output 16 [2022-03-01 16:12:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:05,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873005568] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:05,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:05,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 14] total 41 [2022-03-01 16:12:05,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916423615] [2022-03-01 16:12:05,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:05,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:12:05,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:12:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1343, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:12:05,492 INFO L87 Difference]: Start difference. First operand 10448 states and 35473 transitions. Second operand has 41 states, 41 states have (on average 10.512195121951219) internal successors, (431), 41 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:07,807 INFO L93 Difference]: Finished difference Result 55462 states and 192889 transitions. [2022-03-01 16:12:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 16:12:07,807 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.512195121951219) internal successors, (431), 41 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-01 16:12:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:08,033 INFO L225 Difference]: With dead ends: 55462 [2022-03-01 16:12:08,034 INFO L226 Difference]: Without dead ends: 47527 [2022-03-01 16:12:08,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 343 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1226, Invalid=5254, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 16:12:08,035 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1627 mSDsluCounter, 5377 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 5162 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:08,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 5162 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1491 Invalid, 0 Unknown, 52 Unchecked, 0.7s Time] [2022-03-01 16:12:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47527 states. [2022-03-01 16:12:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47527 to 20690. [2022-03-01 16:12:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20690 states, 20689 states have (on average 3.5488423800087) internal successors, (73422), 20689 states have internal predecessors, (73422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20690 states to 20690 states and 73422 transitions. [2022-03-01 16:12:08,877 INFO L78 Accepts]: Start accepts. Automaton has 20690 states and 73422 transitions. Word has length 183 [2022-03-01 16:12:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:08,878 INFO L470 AbstractCegarLoop]: Abstraction has 20690 states and 73422 transitions. [2022-03-01 16:12:08,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.512195121951219) internal successors, (431), 41 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 20690 states and 73422 transitions. [2022-03-01 16:12:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-01 16:12:08,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:08,918 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, 1, 1, 1] [2022-03-01 16:12:08,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-01 16:12:09,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:09,132 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2053321327, now seen corresponding path program 3 times [2022-03-01 16:12:09,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:09,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377686074] [2022-03-01 16:12:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:09,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:09,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:09,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377686074] [2022-03-01 16:12:09,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377686074] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:09,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802702379] [2022-03-01 16:12:09,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:12:09,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:09,704 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) [2022-03-01 16:12:09,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 16:12:09,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:12:09,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:09,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-01 16:12:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:10,575 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-01 16:12:10,576 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 23 treesize of output 10 [2022-03-01 16:12:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:12:10,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:10,702 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-01 16:12:10,702 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 25 treesize of output 16 [2022-03-01 16:12:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:12:11,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802702379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:11,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:11,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 5, 5] total 25 [2022-03-01 16:12:11,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836094549] [2022-03-01 16:12:11,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:11,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 16:12:11,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 16:12:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2022-03-01 16:12:11,096 INFO L87 Difference]: Start difference. First operand 20690 states and 73422 transitions. Second operand has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:12,535 INFO L93 Difference]: Finished difference Result 29954 states and 104974 transitions. [2022-03-01 16:12:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 16:12:12,536 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-01 16:12:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:12,624 INFO L225 Difference]: With dead ends: 29954 [2022-03-01 16:12:12,624 INFO L226 Difference]: Without dead ends: 27539 [2022-03-01 16:12:12,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=533, Invalid=2889, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 16:12:12,626 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 440 mSDsluCounter, 3906 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:12,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 3822 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1001 Invalid, 0 Unknown, 307 Unchecked, 0.4s Time] [2022-03-01 16:12:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27539 states. [2022-03-01 16:12:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27539 to 22909. [2022-03-01 16:12:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22909 states, 22908 states have (on average 3.5497642744892612) internal successors, (81318), 22908 states have internal predecessors, (81318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22909 states to 22909 states and 81318 transitions. [2022-03-01 16:12:13,209 INFO L78 Accepts]: Start accepts. Automaton has 22909 states and 81318 transitions. Word has length 183 [2022-03-01 16:12:13,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:13,210 INFO L470 AbstractCegarLoop]: Abstraction has 22909 states and 81318 transitions. [2022-03-01 16:12:13,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 22909 states and 81318 transitions. [2022-03-01 16:12:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-01 16:12:13,251 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:13,251 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, 1, 1, 1] [2022-03-01 16:12:13,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:13,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:13,468 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash 964671629, now seen corresponding path program 4 times [2022-03-01 16:12:13,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:13,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519409564] [2022-03-01 16:12:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:14,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:14,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519409564] [2022-03-01 16:12:14,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519409564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:14,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092999649] [2022-03-01 16:12:14,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:12:14,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:14,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:14,159 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) [2022-03-01 16:12:14,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 16:12:14,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:12:14,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:14,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-01 16:12:14,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:14,287 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 [2022-03-01 16:12:14,477 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:12:14,478 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 [2022-03-01 16:12:15,266 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 [2022-03-01 16:12:15,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:12:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:15,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:15,727 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:15,727 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 45 treesize of output 45 [2022-03-01 16:12:15,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-01 16:12:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:17,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092999649] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:17,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:17,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 58 [2022-03-01 16:12:17,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744447186] [2022-03-01 16:12:17,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:17,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-01 16:12:17,398 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-01 16:12:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2980, Unknown=2, NotChecked=0, Total=3306 [2022-03-01 16:12:17,399 INFO L87 Difference]: Start difference. First operand 22909 states and 81318 transitions. Second operand has 58 states, 58 states have (on average 7.982758620689655) internal successors, (463), 58 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:23,415 INFO L93 Difference]: Finished difference Result 72138 states and 250876 transitions. [2022-03-01 16:12:23,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-01 16:12:23,415 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 7.982758620689655) internal successors, (463), 58 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-01 16:12:23,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:23,603 INFO L225 Difference]: With dead ends: 72138 [2022-03-01 16:12:23,603 INFO L226 Difference]: Without dead ends: 58169 [2022-03-01 16:12:23,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2500, Invalid=15320, Unknown=2, NotChecked=0, Total=17822 [2022-03-01 16:12:23,606 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 3452 mSDsluCounter, 7845 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3452 SdHoareTripleChecker+Valid, 7436 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:23,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3452 Valid, 7436 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2454 Invalid, 0 Unknown, 288 Unchecked, 1.1s Time] [2022-03-01 16:12:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58169 states. [2022-03-01 16:12:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58169 to 22216. [2022-03-01 16:12:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22216 states, 22215 states have (on average 3.534773801485483) internal successors, (78525), 22215 states have internal predecessors, (78525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22216 states to 22216 states and 78525 transitions. [2022-03-01 16:12:24,622 INFO L78 Accepts]: Start accepts. Automaton has 22216 states and 78525 transitions. Word has length 183 [2022-03-01 16:12:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:24,622 INFO L470 AbstractCegarLoop]: Abstraction has 22216 states and 78525 transitions. [2022-03-01 16:12:24,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 7.982758620689655) internal successors, (463), 58 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 22216 states and 78525 transitions. [2022-03-01 16:12:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-01 16:12:24,662 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:24,663 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, 1, 1, 1] [2022-03-01 16:12:24,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:24,875 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,SelfDestructingSolverStorable11 [2022-03-01 16:12:24,875 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash -223138657, now seen corresponding path program 5 times [2022-03-01 16:12:24,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:24,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54073515] [2022-03-01 16:12:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:25,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:25,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54073515] [2022-03-01 16:12:25,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54073515] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:25,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789826207] [2022-03-01 16:12:25,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:12:25,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:25,440 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) [2022-03-01 16:12:25,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 16:12:25,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:12:25,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:25,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-01 16:12:25,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:25,567 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 [2022-03-01 16:12:25,756 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:12:25,757 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 [2022-03-01 16:12:26,805 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 [2022-03-01 16:12:27,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-01 16:12:27,102 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:27,102 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 19 treesize of output 10 [2022-03-01 16:12:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:27,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:27,336 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:27,336 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 45 treesize of output 45 [2022-03-01 16:12:27,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-01 16:12:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:29,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789826207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:29,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:29,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 47 [2022-03-01 16:12:29,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509891955] [2022-03-01 16:12:29,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:29,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 16:12:29,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 16:12:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1889, Unknown=1, NotChecked=0, Total=2162 [2022-03-01 16:12:29,006 INFO L87 Difference]: Start difference. First operand 22216 states and 78525 transitions. Second operand has 47 states, 47 states have (on average 8.702127659574469) internal successors, (409), 47 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:31,592 INFO L93 Difference]: Finished difference Result 54084 states and 190939 transitions. [2022-03-01 16:12:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 16:12:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.702127659574469) internal successors, (409), 47 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-01 16:12:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:31,792 INFO L225 Difference]: With dead ends: 54084 [2022-03-01 16:12:31,792 INFO L226 Difference]: Without dead ends: 53307 [2022-03-01 16:12:31,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 344 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1346, Invalid=7020, Unknown=6, NotChecked=0, Total=8372 [2022-03-01 16:12:31,794 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1543 mSDsluCounter, 8288 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 8035 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 528 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:31,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 8035 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1629 Invalid, 0 Unknown, 528 Unchecked, 0.7s Time] [2022-03-01 16:12:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53307 states. [2022-03-01 16:12:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53307 to 26785. [2022-03-01 16:12:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26785 states, 26784 states have (on average 3.5612679211469533) internal successors, (95385), 26784 states have internal predecessors, (95385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26785 states to 26785 states and 95385 transitions. [2022-03-01 16:12:32,859 INFO L78 Accepts]: Start accepts. Automaton has 26785 states and 95385 transitions. Word has length 183 [2022-03-01 16:12:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:32,859 INFO L470 AbstractCegarLoop]: Abstraction has 26785 states and 95385 transitions. [2022-03-01 16:12:32,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.702127659574469) internal successors, (409), 47 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 26785 states and 95385 transitions. [2022-03-01 16:12:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-01 16:12:32,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:32,918 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, 1, 1, 1] [2022-03-01 16:12:32,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-01 16:12:33,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:33,119 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1069910525, now seen corresponding path program 6 times [2022-03-01 16:12:33,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:33,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063912609] [2022-03-01 16:12:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:33,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:33,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063912609] [2022-03-01 16:12:33,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063912609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:33,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530917194] [2022-03-01 16:12:33,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:12:33,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:33,698 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) [2022-03-01 16:12:33,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 16:12:33,822 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 16:12:33,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-01 16:12:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:33,854 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 [2022-03-01 16:12:34,046 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:12:34,046 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 [2022-03-01 16:12:34,748 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 [2022-03-01 16:12:34,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:12:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:34,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:35,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:35,235 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 45 treesize of output 45 [2022-03-01 16:12:35,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-01 16:12:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:37,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530917194] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:37,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:37,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 57 [2022-03-01 16:12:37,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91940642] [2022-03-01 16:12:37,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:37,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-01 16:12:37,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-01 16:12:37,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2933, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:12:37,342 INFO L87 Difference]: Start difference. First operand 26785 states and 95385 transitions. Second operand has 57 states, 57 states have (on average 8.12280701754386) internal successors, (463), 57 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:44,286 INFO L93 Difference]: Finished difference Result 62599 states and 218516 transitions. [2022-03-01 16:12:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 16:12:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 8.12280701754386) internal successors, (463), 57 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-01 16:12:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:44,494 INFO L225 Difference]: With dead ends: 62599 [2022-03-01 16:12:44,494 INFO L226 Difference]: Without dead ends: 58779 [2022-03-01 16:12:44,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 343 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4457 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2653, Invalid=14639, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 16:12:44,497 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 3929 mSDsluCounter, 11732 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 10972 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:44,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3929 Valid, 10972 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 3762 Invalid, 0 Unknown, 548 Unchecked, 1.5s Time] [2022-03-01 16:12:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58779 states. [2022-03-01 16:12:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58779 to 26495. [2022-03-01 16:12:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26495 states, 26494 states have (on average 3.5810749603683854) internal successors, (94877), 26494 states have internal predecessors, (94877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26495 states to 26495 states and 94877 transitions. [2022-03-01 16:12:45,440 INFO L78 Accepts]: Start accepts. Automaton has 26495 states and 94877 transitions. Word has length 183 [2022-03-01 16:12:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:45,440 INFO L470 AbstractCegarLoop]: Abstraction has 26495 states and 94877 transitions. [2022-03-01 16:12:45,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 8.12280701754386) internal successors, (463), 57 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:12:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26495 states and 94877 transitions. [2022-03-01 16:12:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-03-01 16:12:45,497 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:45,497 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, 1, 1, 1] [2022-03-01 16:12:45,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:45,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:45,698 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:12:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1375967481, now seen corresponding path program 7 times [2022-03-01 16:12:45,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:45,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885735980] [2022-03-01 16:12:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:46,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:46,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885735980] [2022-03-01 16:12:46,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885735980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:46,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327893535] [2022-03-01 16:12:46,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:12:46,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:46,285 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) [2022-03-01 16:12:46,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 16:12:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:46,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-01 16:12:46,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:46,440 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 [2022-03-01 16:12:46,469 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-01 16:12:46,471 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 [2022-03-01 16:12:46,839 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:12:46,840 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 15 treesize of output 15 [2022-03-01 16:12:47,876 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 [2022-03-01 16:12:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:12:48,031 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 [2022-03-01 16:12:48,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:12:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:48,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:48,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:48,599 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 167 treesize of output 159 [2022-03-01 16:12:48,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 114 [2022-03-01 16:12:48,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2022-03-01 16:12:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:51,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327893535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:51,192 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:51,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 23] total 63 [2022-03-01 16:12:51,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927084244] [2022-03-01 16:12:51,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:51,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-01 16:12:51,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-01 16:12:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3530, Unknown=4, NotChecked=0, Total=3906 [2022-03-01 16:12:51,193 INFO L87 Difference]: Start difference. First operand 26495 states and 94877 transitions. Second operand has 63 states, 63 states have (on average 7.380952380952381) internal successors, (465), 63 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:13:01,861 INFO L93 Difference]: Finished difference Result 123720 states and 441682 transitions. [2022-03-01 16:13:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 16:13:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 7.380952380952381) internal successors, (465), 63 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-03-01 16:13:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:13:02,285 INFO L225 Difference]: With dead ends: 123720 [2022-03-01 16:13:02,285 INFO L226 Difference]: Without dead ends: 106140 [2022-03-01 16:13:02,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 351 SyntacticMatches, 10 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7565 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3978, Invalid=21773, Unknown=9, NotChecked=0, Total=25760 [2022-03-01 16:13:02,288 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 5880 mSDsluCounter, 10947 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5880 SdHoareTripleChecker+Valid, 9894 SdHoareTripleChecker+Invalid, 5135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1248 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:13:02,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5880 Valid, 9894 Invalid, 5135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 3522 Invalid, 0 Unknown, 1248 Unchecked, 1.6s Time] [2022-03-01 16:13:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106140 states. [2022-03-01 16:13:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106140 to 38135. [2022-03-01 16:13:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38135 states, 38134 states have (on average 3.6607751612734045) internal successors, (139600), 38134 states have internal predecessors, (139600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38135 states to 38135 states and 139600 transitions. [2022-03-01 16:13:04,387 INFO L78 Accepts]: Start accepts. Automaton has 38135 states and 139600 transitions. Word has length 183 [2022-03-01 16:13:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:13:04,387 INFO L470 AbstractCegarLoop]: Abstraction has 38135 states and 139600 transitions. [2022-03-01 16:13:04,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 7.380952380952381) internal successors, (465), 63 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38135 states and 139600 transitions. [2022-03-01 16:13:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-03-01 16:13:04,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:13:04,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-03-01 16:13:04,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 16:13:04,667 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,SelfDestructingSolverStorable14 [2022-03-01 16:13:04,667 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:13:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:13:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1845570942, now seen corresponding path program 2 times [2022-03-01 16:13:04,668 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:13:04,668 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799109120] [2022-03-01 16:13:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:13:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:13:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:13:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:13:04,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:13:04,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799109120] [2022-03-01 16:13:04,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799109120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:13:04,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272868504] [2022-03-01 16:13:04,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:13:04,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:13:04,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:13:04,773 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) [2022-03-01 16:13:04,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 16:13:05,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:13:05,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:13:05,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-01 16:13:05,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:13:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:13:05,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:13:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:13:06,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272868504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:13:06,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:13:06,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-03-01 16:13:06,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114623395] [2022-03-01 16:13:06,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:13:06,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-01 16:13:06,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:13:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-01 16:13:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-01 16:13:06,774 INFO L87 Difference]: Start difference. First operand 38135 states and 139600 transitions. Second operand has 22 states, 22 states have (on average 18.454545454545453) internal successors, (406), 22 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:13:07,427 INFO L93 Difference]: Finished difference Result 52775 states and 189378 transitions. [2022-03-01 16:13:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 16:13:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 18.454545454545453) internal successors, (406), 22 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2022-03-01 16:13:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:13:07,612 INFO L225 Difference]: With dead ends: 52775 [2022-03-01 16:13:07,612 INFO L226 Difference]: Without dead ends: 50283 [2022-03-01 16:13:07,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 16:13:07,613 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1363 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 16:13:07,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 1824 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 16:13:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50283 states. [2022-03-01 16:13:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50283 to 41425. [2022-03-01 16:13:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41425 states, 41424 states have (on average 3.6698532251834686) internal successors, (152020), 41424 states have internal predecessors, (152020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41425 states to 41425 states and 152020 transitions. [2022-03-01 16:13:08,858 INFO L78 Accepts]: Start accepts. Automaton has 41425 states and 152020 transitions. Word has length 187 [2022-03-01 16:13:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:13:08,858 INFO L470 AbstractCegarLoop]: Abstraction has 41425 states and 152020 transitions. [2022-03-01 16:13:08,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.454545454545453) internal successors, (406), 22 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 41425 states and 152020 transitions. [2022-03-01 16:13:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-01 16:13:08,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:13:08,952 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:13:08,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 16:13:09,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-01 16:13:09,153 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:13:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:13:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1206815453, now seen corresponding path program 8 times [2022-03-01 16:13:09,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:13:09,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685159719] [2022-03-01 16:13:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:13:09,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:13:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:13:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:13:10,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:13:10,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685159719] [2022-03-01 16:13:10,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685159719] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:13:10,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977924496] [2022-03-01 16:13:10,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:13:10,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:13:10,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:13:10,336 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) [2022-03-01 16:13:10,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 16:13:10,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:13:10,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:13:10,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-01 16:13:10,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:13:10,479 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 [2022-03-01 16:13:10,738 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:13:10,738 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 [2022-03-01 16:13:11,735 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 19 treesize of output 21 [2022-03-01 16:13:11,821 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-03-01 16:13:11,822 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 24 treesize of output 10 [2022-03-01 16:13:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:13:11,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:13:12,208 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:13:12,209 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 45 treesize of output 45 [2022-03-01 16:13:12,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-01 16:13:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:13:13,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977924496] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:13:13,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:13:13,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 64 [2022-03-01 16:13:13,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365732744] [2022-03-01 16:13:13,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:13:13,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-01 16:13:13,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:13:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-01 16:13:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3742, Unknown=1, NotChecked=0, Total=4032 [2022-03-01 16:13:13,999 INFO L87 Difference]: Start difference. First operand 41425 states and 152020 transitions. Second operand has 64 states, 64 states have (on average 7.25) internal successors, (464), 64 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:32,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:13:32,282 INFO L93 Difference]: Finished difference Result 167201 states and 600562 transitions. [2022-03-01 16:13:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-01 16:13:32,283 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 7.25) internal successors, (464), 64 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2022-03-01 16:13:32,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:13:33,153 INFO L225 Difference]: With dead ends: 167201 [2022-03-01 16:13:33,153 INFO L226 Difference]: Without dead ends: 160336 [2022-03-01 16:13:33,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 346 SyntacticMatches, 22 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14366 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=4799, Invalid=34585, Unknown=18, NotChecked=0, Total=39402 [2022-03-01 16:13:33,155 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 5497 mSDsluCounter, 14623 mSDsCounter, 0 mSdLazyCounter, 5176 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 13646 SdHoareTripleChecker+Invalid, 7031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 5176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1404 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:13:33,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5497 Valid, 13646 Invalid, 7031 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [451 Valid, 5176 Invalid, 0 Unknown, 1404 Unchecked, 2.4s Time] [2022-03-01 16:13:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160336 states. [2022-03-01 16:13:35,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160336 to 62844. [2022-03-01 16:13:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62844 states, 62843 states have (on average 3.72248301322343) internal successors, (233932), 62843 states have internal predecessors, (233932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62844 states to 62844 states and 233932 transitions. [2022-03-01 16:13:36,314 INFO L78 Accepts]: Start accepts. Automaton has 62844 states and 233932 transitions. Word has length 190 [2022-03-01 16:13:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:13:36,315 INFO L470 AbstractCegarLoop]: Abstraction has 62844 states and 233932 transitions. [2022-03-01 16:13:36,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 7.25) internal successors, (464), 64 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 62844 states and 233932 transitions. [2022-03-01 16:13:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-01 16:13:36,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:13:36,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:13:36,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 16:13:36,855 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,SelfDestructingSolverStorable16 [2022-03-01 16:13:36,858 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:13:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:13:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1799425197, now seen corresponding path program 9 times [2022-03-01 16:13:36,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:13:36,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342601909] [2022-03-01 16:13:36,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:13:36,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:13:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:13:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:13:37,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:13:37,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342601909] [2022-03-01 16:13:37,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342601909] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:13:37,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69959244] [2022-03-01 16:13:37,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:13:37,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:13:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:13:37,860 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) [2022-03-01 16:13:37,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 16:13:37,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:13:37,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:13:37,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 16:13:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:13:38,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:13:38,585 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 [2022-03-01 16:13:38,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:13:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-01 16:13:38,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:13:38,735 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_627 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_627) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2022-03-01 16:13:38,756 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:13:38,756 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 45 treesize of output 45 [2022-03-01 16:13:38,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-03-01 16:13:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 1 not checked. [2022-03-01 16:13:39,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69959244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:13:39,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:13:39,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 42 [2022-03-01 16:13:39,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840473513] [2022-03-01 16:13:39,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:13:39,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:13:39,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:13:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:13:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1529, Unknown=1, NotChecked=78, Total=1722 [2022-03-01 16:13:39,439 INFO L87 Difference]: Start difference. First operand 62844 states and 233932 transitions. Second operand has 42 states, 42 states have (on average 10.547619047619047) internal successors, (443), 42 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:13:44,071 INFO L93 Difference]: Finished difference Result 79829 states and 293206 transitions. [2022-03-01 16:13:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 16:13:44,071 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 10.547619047619047) internal successors, (443), 42 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2022-03-01 16:13:44,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:13:44,352 INFO L225 Difference]: With dead ends: 79829 [2022-03-01 16:13:44,353 INFO L226 Difference]: Without dead ends: 76650 [2022-03-01 16:13:44,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1281, Invalid=7278, Unknown=1, NotChecked=182, Total=8742 [2022-03-01 16:13:44,353 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1972 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:13:44,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1972 Valid, 4588 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1776 Invalid, 0 Unknown, 353 Unchecked, 0.7s Time] [2022-03-01 16:13:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76650 states. [2022-03-01 16:13:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76650 to 62092. [2022-03-01 16:13:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62092 states, 62091 states have (on average 3.734663638852652) internal successors, (231889), 62091 states have internal predecessors, (231889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62092 states to 62092 states and 231889 transitions. [2022-03-01 16:13:46,287 INFO L78 Accepts]: Start accepts. Automaton has 62092 states and 231889 transitions. Word has length 190 [2022-03-01 16:13:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:13:46,287 INFO L470 AbstractCegarLoop]: Abstraction has 62092 states and 231889 transitions. [2022-03-01 16:13:46,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.547619047619047) internal successors, (443), 42 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:13:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62092 states and 231889 transitions. [2022-03-01 16:13:46,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-01 16:13:46,457 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:13:46,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:13:46,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 16:13:46,671 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,SelfDestructingSolverStorable17 [2022-03-01 16:13:46,672 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:13:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:13:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1618111305, now seen corresponding path program 10 times [2022-03-01 16:13:46,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:13:46,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081900416] [2022-03-01 16:13:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:13:46,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:13:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:13:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:13:49,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:13:49,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081900416] [2022-03-01 16:13:49,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081900416] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:13:49,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306949162] [2022-03-01 16:13:49,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:13:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:13:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:13:49,770 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) [2022-03-01 16:13:49,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 16:13:49,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:13:49,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:13:49,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-01 16:13:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:13:49,926 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 [2022-03-01 16:13:49,965 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:13:49,965 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 [2022-03-01 16:13:50,334 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-03-01 16:13:50,334 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 16 treesize of output 18 [2022-03-01 16:13:51,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-01 16:13:51,713 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 19 treesize of output 21 [2022-03-01 16:13:51,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-03-01 16:13:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:13:51,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:13:52,321 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:13:52,322 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 85 treesize of output 85 [2022-03-01 16:13:52,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2022-03-01 16:13:52,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2022-03-01 16:13:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:13:54,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306949162] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:13:54,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:13:54,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 25, 25] total 84 [2022-03-01 16:13:54,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534646823] [2022-03-01 16:13:54,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:13:54,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-01 16:13:54,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:13:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-01 16:13:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=6473, Unknown=27, NotChecked=0, Total=6972 [2022-03-01 16:13:54,726 INFO L87 Difference]: Start difference. First operand 62092 states and 231889 transitions. Second operand has 84 states, 84 states have (on average 5.75) internal successors, (483), 84 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:14:20,545 INFO L93 Difference]: Finished difference Result 230399 states and 830946 transitions. [2022-03-01 16:14:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-03-01 16:14:20,546 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 5.75) internal successors, (483), 84 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2022-03-01 16:14:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:14:22,053 INFO L225 Difference]: With dead ends: 230399 [2022-03-01 16:14:22,053 INFO L226 Difference]: Without dead ends: 217333 [2022-03-01 16:14:22,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 343 SyntacticMatches, 27 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22530 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=6920, Invalid=55179, Unknown=151, NotChecked=0, Total=62250 [2022-03-01 16:14:22,057 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 8822 mSDsluCounter, 19419 mSDsCounter, 0 mSdLazyCounter, 6884 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8822 SdHoareTripleChecker+Valid, 17726 SdHoareTripleChecker+Invalid, 10376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 6884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2885 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:14:22,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8822 Valid, 17726 Invalid, 10376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [607 Valid, 6884 Invalid, 0 Unknown, 2885 Unchecked, 3.5s Time] [2022-03-01 16:14:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217333 states. [2022-03-01 16:14:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217333 to 68855. [2022-03-01 16:14:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68855 states, 68854 states have (on average 3.729674383478084) internal successors, (256803), 68854 states have internal predecessors, (256803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68855 states to 68855 states and 256803 transitions. [2022-03-01 16:14:26,359 INFO L78 Accepts]: Start accepts. Automaton has 68855 states and 256803 transitions. Word has length 190 [2022-03-01 16:14:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:14:26,359 INFO L470 AbstractCegarLoop]: Abstraction has 68855 states and 256803 transitions. [2022-03-01 16:14:26,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 5.75) internal successors, (483), 84 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 68855 states and 256803 transitions. [2022-03-01 16:14:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-01 16:14:26,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:14:26,526 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:14:26,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 16:14:26,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:26,728 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:14:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:14:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2119358203, now seen corresponding path program 11 times [2022-03-01 16:14:26,728 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:14:26,728 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326572591] [2022-03-01 16:14:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:26,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:14:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:14:27,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:14:27,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326572591] [2022-03-01 16:14:27,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326572591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:14:27,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622822065] [2022-03-01 16:14:27,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:14:27,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:27,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:14:27,959 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) [2022-03-01 16:14:27,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 16:14:28,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:14:28,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:14:28,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-01 16:14:28,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:14:28,114 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 [2022-03-01 16:14:28,141 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-01 16:14:28,142 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 [2022-03-01 16:14:28,340 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-03-01 16:14:28,340 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 16 treesize of output 18 [2022-03-01 16:14:28,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-03-01 16:14:29,042 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 [2022-03-01 16:14:29,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:14:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-01 16:14:29,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:29,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_731 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_731) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2022-03-01 16:14:29,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_731 (Array Int Int)) (v_ArrVal_730 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_730) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_731) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2022-03-01 16:14:29,243 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:14:29,243 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 167 treesize of output 159 [2022-03-01 16:14:29,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 126 [2022-03-01 16:14:29,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 102 [2022-03-01 16:14:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-03-01 16:14:30,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622822065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:14:30,173 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:14:30,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 16, 14] total 45 [2022-03-01 16:14:30,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216647573] [2022-03-01 16:14:30,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:14:30,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 16:14:30,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:14:30,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 16:14:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1682, Unknown=2, NotChecked=166, Total=1980 [2022-03-01 16:14:30,174 INFO L87 Difference]: Start difference. First operand 68855 states and 256803 transitions. Second operand has 45 states, 45 states have (on average 8.71111111111111) internal successors, (392), 45 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:14:35,472 INFO L93 Difference]: Finished difference Result 82696 states and 305777 transitions. [2022-03-01 16:14:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:14:35,472 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.71111111111111) internal successors, (392), 45 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2022-03-01 16:14:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:14:35,789 INFO L225 Difference]: With dead ends: 82696 [2022-03-01 16:14:35,789 INFO L226 Difference]: Without dead ends: 77167 [2022-03-01 16:14:35,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 364 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2252 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1576, Invalid=8530, Unknown=2, NotChecked=398, Total=10506 [2022-03-01 16:14:35,790 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1891 mSDsluCounter, 4354 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 592 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:14:35,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1891 Valid, 4246 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1591 Invalid, 0 Unknown, 592 Unchecked, 0.7s Time] [2022-03-01 16:14:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77167 states. [2022-03-01 16:14:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77167 to 60005. [2022-03-01 16:14:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60005 states, 60004 states have (on average 3.784447703486434) internal successors, (227082), 60004 states have internal predecessors, (227082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60005 states to 60005 states and 227082 transitions. [2022-03-01 16:14:37,780 INFO L78 Accepts]: Start accepts. Automaton has 60005 states and 227082 transitions. Word has length 190 [2022-03-01 16:14:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:14:37,780 INFO L470 AbstractCegarLoop]: Abstraction has 60005 states and 227082 transitions. [2022-03-01 16:14:37,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.71111111111111) internal successors, (392), 45 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 60005 states and 227082 transitions. [2022-03-01 16:14:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-01 16:14:38,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:14:38,157 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-01 16:14:38,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-01 16:14:38,357 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,SelfDestructingSolverStorable19 [2022-03-01 16:14:38,358 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:14:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:14:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 964566045, now seen corresponding path program 1 times [2022-03-01 16:14:38,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:14:38,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221239363] [2022-03-01 16:14:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:14:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:14:38,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:14:38,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221239363] [2022-03-01 16:14:38,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221239363] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:14:38,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258784209] [2022-03-01 16:14:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:38,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:38,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:14:38,740 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) [2022-03-01 16:14:38,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 16:14:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:38,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-01 16:14:38,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:14:39,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-01 16:14:39,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:14:39,843 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 19 treesize of output 10 [2022-03-01 16:14:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:14:39,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:40,194 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-01 16:14:40,194 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 24 treesize of output 15 [2022-03-01 16:14:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:14:41,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258784209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:14:41,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:14:41,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 15] total 49 [2022-03-01 16:14:41,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882666846] [2022-03-01 16:14:41,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:14:41,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-01 16:14:41,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:14:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-01 16:14:41,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1940, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 16:14:41,074 INFO L87 Difference]: Start difference. First operand 60005 states and 227082 transitions. Second operand has 49 states, 49 states have (on average 8.244897959183673) internal successors, (404), 49 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:14:42,741 INFO L93 Difference]: Finished difference Result 101198 states and 373769 transitions. [2022-03-01 16:14:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-01 16:14:42,742 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.244897959183673) internal successors, (404), 49 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-03-01 16:14:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:14:43,104 INFO L225 Difference]: With dead ends: 101198 [2022-03-01 16:14:43,104 INFO L226 Difference]: Without dead ends: 92207 [2022-03-01 16:14:43,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=3925, Unknown=0, NotChecked=0, Total=4830 [2022-03-01 16:14:43,105 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1810 mSDsluCounter, 4957 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:14:43,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 4653 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1286 Invalid, 0 Unknown, 66 Unchecked, 0.5s Time] [2022-03-01 16:14:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92207 states. [2022-03-01 16:14:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92207 to 62418. [2022-03-01 16:14:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62418 states, 62417 states have (on average 3.781549898264896) internal successors, (236033), 62417 states have internal predecessors, (236033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62418 states to 62418 states and 236033 transitions. [2022-03-01 16:14:45,531 INFO L78 Accepts]: Start accepts. Automaton has 62418 states and 236033 transitions. Word has length 195 [2022-03-01 16:14:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:14:45,531 INFO L470 AbstractCegarLoop]: Abstraction has 62418 states and 236033 transitions. [2022-03-01 16:14:45,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.244897959183673) internal successors, (404), 49 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 62418 states and 236033 transitions. [2022-03-01 16:14:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-01 16:14:45,685 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:14:45,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-01 16:14:45,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 16:14:45,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:45,887 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:14:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:14:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1624057675, now seen corresponding path program 2 times [2022-03-01 16:14:45,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:14:45,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808444391] [2022-03-01 16:14:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:45,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:14:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:14:46,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:14:46,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808444391] [2022-03-01 16:14:46,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808444391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:14:46,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094210214] [2022-03-01 16:14:46,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:14:46,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:46,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:14:46,294 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) [2022-03-01 16:14:46,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 16:14:46,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:14:46,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:14:46,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-01 16:14:46,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:14:47,319 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-03-01 16:14:47,319 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 23 treesize of output 10 [2022-03-01 16:14:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:14:47,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:47,587 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-01 16:14:47,587 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 24 treesize of output 15 [2022-03-01 16:14:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:14:48,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094210214] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:14:48,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:14:48,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 15] total 45 [2022-03-01 16:14:48,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134897564] [2022-03-01 16:14:48,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:14:48,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-01 16:14:48,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:14:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-01 16:14:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2022-03-01 16:14:48,491 INFO L87 Difference]: Start difference. First operand 62418 states and 236033 transitions. Second operand has 45 states, 45 states have (on average 8.977777777777778) internal successors, (404), 45 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:14:51,916 INFO L93 Difference]: Finished difference Result 172944 states and 652354 transitions. [2022-03-01 16:14:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-01 16:14:51,916 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.977777777777778) internal successors, (404), 45 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-03-01 16:14:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:14:52,908 INFO L225 Difference]: With dead ends: 172944 [2022-03-01 16:14:52,909 INFO L226 Difference]: Without dead ends: 165528 [2022-03-01 16:14:52,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1065, Invalid=5415, Unknown=0, NotChecked=0, Total=6480 [2022-03-01 16:14:52,909 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 2300 mSDsluCounter, 6660 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 16:14:52,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2300 Valid, 6175 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2236 Invalid, 0 Unknown, 103 Unchecked, 0.9s Time] [2022-03-01 16:14:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165528 states. [2022-03-01 16:14:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165528 to 92918. [2022-03-01 16:14:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92918 states, 92917 states have (on average 3.795376518828632) internal successors, (352655), 92917 states have internal predecessors, (352655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92918 states to 92918 states and 352655 transitions. [2022-03-01 16:14:57,096 INFO L78 Accepts]: Start accepts. Automaton has 92918 states and 352655 transitions. Word has length 195 [2022-03-01 16:14:57,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:14:57,097 INFO L470 AbstractCegarLoop]: Abstraction has 92918 states and 352655 transitions. [2022-03-01 16:14:57,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.977777777777778) internal successors, (404), 45 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:14:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 92918 states and 352655 transitions. [2022-03-01 16:14:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-01 16:14:57,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:14:57,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-01 16:14:57,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 16:14:57,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:57,522 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:14:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:14:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1578591765, now seen corresponding path program 3 times [2022-03-01 16:14:57,522 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:14:57,522 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528323208] [2022-03-01 16:14:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:14:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:59,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:14:59,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528323208] [2022-03-01 16:14:59,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528323208] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:14:59,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310621821] [2022-03-01 16:14:59,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:14:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:59,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:14:59,341 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) [2022-03-01 16:14:59,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 16:14:59,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 16:14:59,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:14:59,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:14:59,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:14:59,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-01 16:14:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-01 16:14:59,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:59,899 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-01 16:14:59,900 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 24 treesize of output 15 [2022-03-01 16:15:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-01 16:15:00,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310621821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:15:00,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:15:00,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 6, 6] total 42 [2022-03-01 16:15:00,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770052456] [2022-03-01 16:15:00,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:15:00,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:15:00,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:15:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:15:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1577, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:15:00,143 INFO L87 Difference]: Start difference. First operand 92918 states and 352655 transitions. Second operand has 42 states, 42 states have (on average 7.619047619047619) internal successors, (320), 42 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:15:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:15:04,905 INFO L93 Difference]: Finished difference Result 161926 states and 605633 transitions. [2022-03-01 16:15:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 16:15:04,905 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.619047619047619) internal successors, (320), 42 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-03-01 16:15:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:15:05,661 INFO L225 Difference]: With dead ends: 161926 [2022-03-01 16:15:05,662 INFO L226 Difference]: Without dead ends: 161926 [2022-03-01 16:15:05,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2560 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=827, Invalid=8485, Unknown=0, NotChecked=0, Total=9312 [2022-03-01 16:15:05,662 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 1719 mSDsluCounter, 6728 mSDsCounter, 0 mSdLazyCounter, 3318 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 6493 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:15:05,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 6493 Invalid, 3382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3318 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-01 16:15:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161926 states. [2022-03-01 16:15:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161926 to 105618. [2022-03-01 16:15:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105618 states, 105617 states have (on average 3.8081748203414225) internal successors, (402208), 105617 states have internal predecessors, (402208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:15:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105618 states to 105618 states and 402208 transitions. [2022-03-01 16:15:10,291 INFO L78 Accepts]: Start accepts. Automaton has 105618 states and 402208 transitions. Word has length 195 [2022-03-01 16:15:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:15:10,291 INFO L470 AbstractCegarLoop]: Abstraction has 105618 states and 402208 transitions. [2022-03-01 16:15:10,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.619047619047619) internal successors, (320), 42 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:15:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 105618 states and 402208 transitions. [2022-03-01 16:15:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-01 16:15:10,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:15:10,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-01 16:15:10,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 16:15:10,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-01 16:15:10,783 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:15:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:15:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1542428967, now seen corresponding path program 4 times [2022-03-01 16:15:10,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:15:10,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124487341] [2022-03-01 16:15:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:15:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:15:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:15:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:15:12,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:15:12,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124487341] [2022-03-01 16:15:12,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124487341] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:15:12,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595539218] [2022-03-01 16:15:12,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:15:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:12,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:15:12,494 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) [2022-03-01 16:15:12,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 16:15:12,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:15:12,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:15:12,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-01 16:15:12,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:15:13,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-03-01 16:15:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:15:13,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:15:13,627 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-03-01 16:15:13,628 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 24 treesize of output 15 [2022-03-01 16:15:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-01 16:15:14,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595539218] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:15:14,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:15:14,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 14, 15] total 62 [2022-03-01 16:15:14,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437446335] [2022-03-01 16:15:14,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:15:14,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-01 16:15:14,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:15:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-01 16:15:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=3254, Unknown=0, NotChecked=0, Total=3782 [2022-03-01 16:15:14,699 INFO L87 Difference]: Start difference. First operand 105618 states and 402208 transitions. Second operand has 62 states, 62 states have (on average 7.274193548387097) internal successors, (451), 62 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:15:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:15:25,665 INFO L93 Difference]: Finished difference Result 284787 states and 1074880 transitions. [2022-03-01 16:15:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-01 16:15:25,666 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.274193548387097) internal successors, (451), 62 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-03-01 16:15:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:15:27,384 INFO L225 Difference]: With dead ends: 284787 [2022-03-01 16:15:27,384 INFO L226 Difference]: Without dead ends: 273366 [2022-03-01 16:15:27,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8490 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3369, Invalid=25701, Unknown=0, NotChecked=0, Total=29070 [2022-03-01 16:15:27,385 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 4757 mSDsluCounter, 11060 mSDsCounter, 0 mSdLazyCounter, 5207 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 10442 SdHoareTripleChecker+Invalid, 5510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 5207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:15:27,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 10442 Invalid, 5510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 5207 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-01 16:15:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273366 states. [2022-03-01 16:15:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273366 to 165041. [2022-03-01 16:15:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165041 states, 165040 states have (on average 3.876666262724188) internal successors, (639805), 165040 states have internal predecessors, (639805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:15:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165041 states to 165041 states and 639805 transitions. [2022-03-01 16:15:36,003 INFO L78 Accepts]: Start accepts. Automaton has 165041 states and 639805 transitions. Word has length 195 [2022-03-01 16:15:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:15:36,004 INFO L470 AbstractCegarLoop]: Abstraction has 165041 states and 639805 transitions. [2022-03-01 16:15:36,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.274193548387097) internal successors, (451), 62 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 16:15:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 165041 states and 639805 transitions. [2022-03-01 16:15:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-03-01 16:15:36,879 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:15:36,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-01 16:15:36,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-01 16:15:37,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:37,091 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 16:15:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:15:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash -268763095, now seen corresponding path program 5 times [2022-03-01 16:15:37,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:15:37,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73318712] [2022-03-01 16:15:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:15:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:15:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:15:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:15:39,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:15:39,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73318712] [2022-03-01 16:15:39,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73318712] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:15:39,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473767130] [2022-03-01 16:15:39,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:15:39,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:39,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:15:39,591 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) [2022-03-01 16:15:39,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 16:15:39,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 16:15:39,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:15:39,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-01 16:15:39,754 INFO L286 TraceCheckSpWp]: Computing forward predicates...