/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-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 14:50:03,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 14:50:03,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 14:50:03,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-18 14:50:03,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 14:50:03,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 14:50:03,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 14:50:03,885 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 [2022-02-18 14:50:03,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 14:50:03,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 14:50:03,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 14:50:03,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 14:50:03,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 14:50:03,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 14:50:03,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 14:50:03,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 14:50:03,914 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 14:50:03,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 14:50:03,915 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 14:50:03,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 14:50:03,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 14:50:03,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 14:50:03,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 14:50:03,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 14:50:03,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 14:50:03,916 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 14:50:03,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 14:50:03,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 14:50:03,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 14:50:03,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 14:50:03,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 14:50:03,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 14:50:03,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 14:50:03,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:50:03,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 14:50:03,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 14:50:03,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 14:50:03,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 14:50:03,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 14:50:03,918 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 14:50:03,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 14:50:03,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 14:50:04,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 14:50:04,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 14:50:04,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 14:50:04,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-18 14:50:04,167 INFO L275 PluginConnector]: CDTParser initialized [2022-02-18 14:50:04,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-18 14:50:04,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb17f256e/c1b1cc0bec1741fda75dbf74c3655f8b/FLAG4ed3266aa [2022-02-18 14:50:04,620 INFO L306 CDTParser]: Found 1 translation units. [2022-02-18 14:50:04,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-02-18 14:50:04,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb17f256e/c1b1cc0bec1741fda75dbf74c3655f8b/FLAG4ed3266aa [2022-02-18 14:50:05,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb17f256e/c1b1cc0bec1741fda75dbf74c3655f8b [2022-02-18 14:50:05,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 14:50:05,026 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-18 14:50:05,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-18 14:50:05,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-18 14:50:05,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-18 14:50:05,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390ee380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05, skipping insertion in model container [2022-02-18 14:50:05,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-18 14:50:05,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-18 14:50:05,296 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-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-18 14:50:05,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:50:05,306 INFO L203 MainTranslator]: Completed pre-run [2022-02-18 14:50:05,334 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-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-02-18 14:50:05,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:50:05,355 INFO L208 MainTranslator]: Completed translation [2022-02-18 14:50:05,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05 WrapperNode [2022-02-18 14:50:05,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-18 14:50:05,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 14:50:05,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 14:50:05,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 14:50:05,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,392 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-02-18 14:50:05,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 14:50:05,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 14:50:05,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 14:50:05,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 14:50:05,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 14:50:05,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 14:50:05,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 14:50:05,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 14:50:05,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (1/1) ... [2022-02-18 14:50:05,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:50:05,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:05,460 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) [2022-02-18 14:50:05,465 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 [2022-02-18 14:50:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-18 14:50:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-18 14:50:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-18 14:50:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-18 14:50:05,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-18 14:50:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 14:50:05,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-18 14:50:05,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-18 14:50:05,499 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 14:50:05,558 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 14:50:05,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 14:50:05,769 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 14:50:05,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 14:50:05,801 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-18 14:50:05,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:50:05 BoogieIcfgContainer [2022-02-18 14:50:05,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 14:50:05,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 14:50:05,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 14:50:05,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 14:50:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:50:05" (1/3) ... [2022-02-18 14:50:05,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f35e89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:50:05, skipping insertion in model container [2022-02-18 14:50:05,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:50:05" (2/3) ... [2022-02-18 14:50:05,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f35e89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:50:05, skipping insertion in model container [2022-02-18 14:50:05,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:50:05" (3/3) ... [2022-02-18 14:50:05,810 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-02-18 14:50:05,814 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 14:50:05,815 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 14:50:05,815 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 14:50:05,815 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 14:50:05,842 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,842 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,843 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,843 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,843 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,844 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,845 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,846 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,846 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,848 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,850 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,852 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,852 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,853 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,856 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,857 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,857 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,858 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:50:05,861 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-18 14:50:05,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 14:50:05,920 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 [2022-02-18 14:50:05,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-18 14:50:05,938 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 188 flow [2022-02-18 14:50:06,013 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-18 14:50:06,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:06,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:06,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:06,046 INFO L85 PathProgramCache]: Analyzing trace with hash 146847265, now seen corresponding path program 1 times [2022-02-18 14:50:06,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:06,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059228426] [2022-02-18 14:50:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:06,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:06,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059228426] [2022-02-18 14:50:06,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059228426] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:50:06,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:50:06,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-18 14:50:06,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781960784] [2022-02-18 14:50:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:50:06,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-18 14:50:06,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-18 14:50:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-18 14:50:06,317 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:06,368 INFO L93 Difference]: Finished difference Result 332 states and 782 transitions. [2022-02-18 14:50:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-18 14:50:06,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-18 14:50:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:06,389 INFO L225 Difference]: With dead ends: 332 [2022-02-18 14:50:06,390 INFO L226 Difference]: Without dead ends: 330 [2022-02-18 14:50:06,391 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 [2022-02-18 14:50:06,394 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:06,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:50:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-02-18 14:50:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-02-18 14:50:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.370820668693009) internal successors, (780), 329 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 780 transitions. [2022-02-18 14:50:06,472 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 780 transitions. Word has length 62 [2022-02-18 14:50:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:06,473 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 780 transitions. [2022-02-18 14:50:06,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 780 transitions. [2022-02-18 14:50:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-02-18 14:50:06,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:06,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:06,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 14:50:06,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -618423457, now seen corresponding path program 1 times [2022-02-18 14:50:06,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:06,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185443690] [2022-02-18 14:50:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:06,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:06,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185443690] [2022-02-18 14:50:06,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185443690] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:50:06,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:50:06,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-18 14:50:06,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580042958] [2022-02-18 14:50:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:50:06,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-18 14:50:06,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-18 14:50:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:50:06,727 INFO L87 Difference]: Start difference. First operand 330 states and 780 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:06,819 INFO L93 Difference]: Finished difference Result 450 states and 1092 transitions. [2022-02-18 14:50:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-18 14:50:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-02-18 14:50:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:06,824 INFO L225 Difference]: With dead ends: 450 [2022-02-18 14:50:06,825 INFO L226 Difference]: Without dead ends: 450 [2022-02-18 14:50:06,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-18 14:50:06,828 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 108 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 135 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:50:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-02-18 14:50:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 360. [2022-02-18 14:50:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.3899721448467965) internal successors, (858), 359 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 858 transitions. [2022-02-18 14:50:06,874 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 858 transitions. Word has length 62 [2022-02-18 14:50:06,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:06,875 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 858 transitions. [2022-02-18 14:50:06,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 858 transitions. [2022-02-18 14:50:06,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-18 14:50:06,877 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:06,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 14:50:06,878 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1788424323, now seen corresponding path program 1 times [2022-02-18 14:50:06,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:06,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162588596] [2022-02-18 14:50:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:06,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:50:07,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:07,147 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162588596] [2022-02-18 14:50:07,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162588596] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:50:07,147 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:50:07,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-18 14:50:07,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049670689] [2022-02-18 14:50:07,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:50:07,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-18 14:50:07,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-18 14:50:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:50:07,149 INFO L87 Difference]: Start difference. First operand 360 states and 858 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:07,228 INFO L93 Difference]: Finished difference Result 446 states and 1090 transitions. [2022-02-18 14:50:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-18 14:50:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-18 14:50:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:07,232 INFO L225 Difference]: With dead ends: 446 [2022-02-18 14:50:07,232 INFO L226 Difference]: Without dead ends: 446 [2022-02-18 14:50:07,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-02-18 14:50:07,239 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 83 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:07,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 157 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:50:07,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-02-18 14:50:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 403. [2022-02-18 14:50:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 2.4228855721393034) internal successors, (974), 402 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 974 transitions. [2022-02-18 14:50:07,252 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 974 transitions. Word has length 67 [2022-02-18 14:50:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 974 transitions. [2022-02-18 14:50:07,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 974 transitions. [2022-02-18 14:50:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:07,255 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:07,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:07,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-18 14:50:07,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash 679645881, now seen corresponding path program 1 times [2022-02-18 14:50:07,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:07,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860464033] [2022-02-18 14:50:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:07,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:07,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:07,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860464033] [2022-02-18 14:50:07,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860464033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:07,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154758102] [2022-02-18 14:50:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:07,635 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) [2022-02-18 14:50:07,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-18 14:50:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:07,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:07,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:08,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:09,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154758102] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:09,082 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:09,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:09,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473382322] [2022-02-18 14:50:09,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:09,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:09,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:09,088 INFO L87 Difference]: Start difference. First operand 403 states and 974 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:11,605 INFO L93 Difference]: Finished difference Result 2098 states and 5141 transitions. [2022-02-18 14:50:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-18 14:50:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:11,614 INFO L225 Difference]: With dead ends: 2098 [2022-02-18 14:50:11,614 INFO L226 Difference]: Without dead ends: 1648 [2022-02-18 14:50:11,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1113, Invalid=6027, Unknown=0, NotChecked=0, Total=7140 [2022-02-18 14:50:11,618 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1102 mSDsluCounter, 3465 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:11,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3477 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:50:11,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-02-18 14:50:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 707. [2022-02-18 14:50:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 2.5651558073654392) internal successors, (1811), 706 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1811 transitions. [2022-02-18 14:50:11,644 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1811 transitions. Word has length 69 [2022-02-18 14:50:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:11,645 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 1811 transitions. [2022-02-18 14:50:11,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1811 transitions. [2022-02-18 14:50:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:11,647 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:11,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:11,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-18 14:50:11,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:11,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash 302508043, now seen corresponding path program 2 times [2022-02-18 14:50:11,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:11,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179239918] [2022-02-18 14:50:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:11,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:12,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:12,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179239918] [2022-02-18 14:50:12,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179239918] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:12,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19664204] [2022-02-18 14:50:12,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:50:12,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:12,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:12,150 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) [2022-02-18 14:50:12,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-18 14:50:12,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:50:12,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:12,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:12,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:12,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:13,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19664204] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:13,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:13,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:13,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54339848] [2022-02-18 14:50:13,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:13,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:13,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:13,472 INFO L87 Difference]: Start difference. First operand 707 states and 1811 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:16,765 INFO L93 Difference]: Finished difference Result 2604 states and 6577 transitions. [2022-02-18 14:50:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-18 14:50:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:16,780 INFO L225 Difference]: With dead ends: 2604 [2022-02-18 14:50:16,780 INFO L226 Difference]: Without dead ends: 2451 [2022-02-18 14:50:16,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3418 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1784, Invalid=8116, Unknown=0, NotChecked=0, Total=9900 [2022-02-18 14:50:16,784 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1577 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:16,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 3077 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:50:16,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2022-02-18 14:50:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 867. [2022-02-18 14:50:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6963048498845263) internal successors, (2335), 866 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2335 transitions. [2022-02-18 14:50:16,822 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2335 transitions. Word has length 69 [2022-02-18 14:50:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2335 transitions. [2022-02-18 14:50:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2335 transitions. [2022-02-18 14:50:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:16,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:16,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:16,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:17,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:17,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash -371365213, now seen corresponding path program 3 times [2022-02-18 14:50:17,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:17,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012065260] [2022-02-18 14:50:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:17,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:17,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012065260] [2022-02-18 14:50:17,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012065260] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:17,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505061626] [2022-02-18 14:50:17,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:50:17,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:17,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:17,300 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) [2022-02-18 14:50:17,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-18 14:50:17,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-18 14:50:17,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:17,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:17,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:17,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:18,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505061626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:18,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:18,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:18,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007285794] [2022-02-18 14:50:18,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:18,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:18,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:18,331 INFO L87 Difference]: Start difference. First operand 867 states and 2335 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:21,997 INFO L93 Difference]: Finished difference Result 2667 states and 6760 transitions. [2022-02-18 14:50:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-18 14:50:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:22,010 INFO L225 Difference]: With dead ends: 2667 [2022-02-18 14:50:22,010 INFO L226 Difference]: Without dead ends: 2439 [2022-02-18 14:50:22,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2254, Invalid=11318, Unknown=0, NotChecked=0, Total=13572 [2022-02-18 14:50:22,014 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1710 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:22,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 3098 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:50:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2022-02-18 14:50:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 843. [2022-02-18 14:50:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.666270783847981) internal successors, (2245), 842 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2245 transitions. [2022-02-18 14:50:22,051 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2245 transitions. Word has length 69 [2022-02-18 14:50:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:22,052 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2245 transitions. [2022-02-18 14:50:22,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2245 transitions. [2022-02-18 14:50:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:22,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:22,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:22,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:22,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:22,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1442639007, now seen corresponding path program 4 times [2022-02-18 14:50:22,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:22,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195162979] [2022-02-18 14:50:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:22,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:22,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:22,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195162979] [2022-02-18 14:50:22,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195162979] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:22,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636525783] [2022-02-18 14:50:22,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:50:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:22,514 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) [2022-02-18 14:50:22,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-18 14:50:22,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:50:22,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:22,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:22,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:23,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:23,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636525783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:23,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:23,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:23,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050116521] [2022-02-18 14:50:23,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:23,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:23,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:23,605 INFO L87 Difference]: Start difference. First operand 843 states and 2245 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:26,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:26,297 INFO L93 Difference]: Finished difference Result 2368 states and 5958 transitions. [2022-02-18 14:50:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-18 14:50:26,297 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:26,307 INFO L225 Difference]: With dead ends: 2368 [2022-02-18 14:50:26,307 INFO L226 Difference]: Without dead ends: 2146 [2022-02-18 14:50:26,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3455 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1497, Invalid=9009, Unknown=0, NotChecked=0, Total=10506 [2022-02-18 14:50:26,310 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1258 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:26,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 3133 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:50:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-02-18 14:50:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 843. [2022-02-18 14:50:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 2.652019002375297) internal successors, (2233), 842 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 2233 transitions. [2022-02-18 14:50:26,343 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 2233 transitions. Word has length 69 [2022-02-18 14:50:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:26,344 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 2233 transitions. [2022-02-18 14:50:26,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 2233 transitions. [2022-02-18 14:50:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:26,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:26,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:26,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:26,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:26,559 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:26,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash -281754549, now seen corresponding path program 5 times [2022-02-18 14:50:26,560 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:26,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370277923] [2022-02-18 14:50:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:26,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:26,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370277923] [2022-02-18 14:50:26,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370277923] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:26,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111604949] [2022-02-18 14:50:26,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:50:26,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:26,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:26,820 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) [2022-02-18 14:50:26,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-18 14:50:26,868 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:50:26,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:26,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:26,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:27,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:27,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111604949] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:27,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:27,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:27,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930391588] [2022-02-18 14:50:27,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:27,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:27,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:27,777 INFO L87 Difference]: Start difference. First operand 843 states and 2233 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:30,041 INFO L93 Difference]: Finished difference Result 2392 states and 6232 transitions. [2022-02-18 14:50:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-18 14:50:30,042 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:30,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:30,053 INFO L225 Difference]: With dead ends: 2392 [2022-02-18 14:50:30,053 INFO L226 Difference]: Without dead ends: 2290 [2022-02-18 14:50:30,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1351, Invalid=6305, Unknown=0, NotChecked=0, Total=7656 [2022-02-18 14:50:30,056 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1116 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:30,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 2539 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:50:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-02-18 14:50:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 887. [2022-02-18 14:50:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 2.6930022573363432) internal successors, (2386), 886 states have internal predecessors, (2386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 2386 transitions. [2022-02-18 14:50:30,093 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 2386 transitions. Word has length 69 [2022-02-18 14:50:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:30,094 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 2386 transitions. [2022-02-18 14:50:30,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 2386 transitions. [2022-02-18 14:50:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:30,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:30,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:30,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:30,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:30,320 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash -955627805, now seen corresponding path program 6 times [2022-02-18 14:50:30,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:30,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887552208] [2022-02-18 14:50:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:30,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:30,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887552208] [2022-02-18 14:50:30,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887552208] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:30,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275919910] [2022-02-18 14:50:30,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:50:30,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:30,532 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) [2022-02-18 14:50:30,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-18 14:50:30,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-18 14:50:30,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:30,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:30,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:31,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:31,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275919910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:31,532 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:31,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:31,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043653777] [2022-02-18 14:50:31,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:31,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:31,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:31,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:31,533 INFO L87 Difference]: Start difference. First operand 887 states and 2386 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:33,744 INFO L93 Difference]: Finished difference Result 2108 states and 5506 transitions. [2022-02-18 14:50:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-18 14:50:33,744 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:33,751 INFO L225 Difference]: With dead ends: 2108 [2022-02-18 14:50:33,751 INFO L226 Difference]: Without dead ends: 1991 [2022-02-18 14:50:33,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1149, Invalid=5331, Unknown=0, NotChecked=0, Total=6480 [2022-02-18 14:50:33,753 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 710 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:33,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3819 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:50:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-02-18 14:50:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 875. [2022-02-18 14:50:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.6739130434782608) internal successors, (2337), 874 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2337 transitions. [2022-02-18 14:50:33,782 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2337 transitions. Word has length 69 [2022-02-18 14:50:33,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:33,782 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 2337 transitions. [2022-02-18 14:50:33,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2337 transitions. [2022-02-18 14:50:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:33,785 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:33,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:33,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-02-18 14:50:34,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:34,006 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1554749941, now seen corresponding path program 7 times [2022-02-18 14:50:34,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:34,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319168706] [2022-02-18 14:50:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:34,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:34,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:34,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319168706] [2022-02-18 14:50:34,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319168706] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:34,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562446031] [2022-02-18 14:50:34,224 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:50:34,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:34,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:34,225 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) [2022-02-18 14:50:34,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-18 14:50:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:34,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:34,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:34,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:35,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562446031] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:35,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:35,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:35,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35555465] [2022-02-18 14:50:35,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:35,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:35,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:35,198 INFO L87 Difference]: Start difference. First operand 875 states and 2337 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:36,942 INFO L93 Difference]: Finished difference Result 1938 states and 5172 transitions. [2022-02-18 14:50:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-18 14:50:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:36,950 INFO L225 Difference]: With dead ends: 1938 [2022-02-18 14:50:36,951 INFO L226 Difference]: Without dead ends: 1887 [2022-02-18 14:50:36,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=897, Invalid=4073, Unknown=0, NotChecked=0, Total=4970 [2022-02-18 14:50:36,952 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 622 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:36,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2313 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:50:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-02-18 14:50:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 891. [2022-02-18 14:50:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 2.6932584269662923) internal successors, (2397), 890 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 2397 transitions. [2022-02-18 14:50:36,980 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 2397 transitions. Word has length 69 [2022-02-18 14:50:36,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:36,980 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 2397 transitions. [2022-02-18 14:50:36,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 2397 transitions. [2022-02-18 14:50:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:36,983 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:36,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:37,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-18 14:50:37,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:37,197 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:37,198 INFO L85 PathProgramCache]: Analyzing trace with hash 880876685, now seen corresponding path program 8 times [2022-02-18 14:50:37,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:37,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292609401] [2022-02-18 14:50:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:37,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:37,426 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:37,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292609401] [2022-02-18 14:50:37,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292609401] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:37,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813442062] [2022-02-18 14:50:37,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:50:37,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:37,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:37,428 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) [2022-02-18 14:50:37,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-18 14:50:37,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:50:37,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:37,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:37,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:37,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:38,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813442062] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:38,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:38,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:38,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307518606] [2022-02-18 14:50:38,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:38,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:38,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:38,414 INFO L87 Difference]: Start difference. First operand 891 states and 2397 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:39,844 INFO L93 Difference]: Finished difference Result 1788 states and 4789 transitions. [2022-02-18 14:50:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-18 14:50:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:39,852 INFO L225 Difference]: With dead ends: 1788 [2022-02-18 14:50:39,852 INFO L226 Difference]: Without dead ends: 1722 [2022-02-18 14:50:39,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=839, Invalid=3853, Unknown=0, NotChecked=0, Total=4692 [2022-02-18 14:50:39,854 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 709 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:39,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1962 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:50:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-02-18 14:50:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 871. [2022-02-18 14:50:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 2.6735632183908047) internal successors, (2326), 870 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 2326 transitions. [2022-02-18 14:50:39,878 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 2326 transitions. Word has length 69 [2022-02-18 14:50:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:39,878 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 2326 transitions. [2022-02-18 14:50:39,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 2326 transitions. [2022-02-18 14:50:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:39,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:39,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:39,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:40,096 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,SelfDestructingSolverStorable10 [2022-02-18 14:50:40,097 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1872132149, now seen corresponding path program 9 times [2022-02-18 14:50:40,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:40,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432889933] [2022-02-18 14:50:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:40,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:40,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:40,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432889933] [2022-02-18 14:50:40,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432889933] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:40,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682329107] [2022-02-18 14:50:40,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:50:40,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:40,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:40,321 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) [2022-02-18 14:50:40,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-18 14:50:40,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:50:40,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:40,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:40,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:40,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:41,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682329107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:41,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:41,307 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:41,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651114692] [2022-02-18 14:50:41,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:41,307 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:41,308 INFO L87 Difference]: Start difference. First operand 871 states and 2326 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:43,669 INFO L93 Difference]: Finished difference Result 2062 states and 5485 transitions. [2022-02-18 14:50:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-18 14:50:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:43,685 INFO L225 Difference]: With dead ends: 2062 [2022-02-18 14:50:43,685 INFO L226 Difference]: Without dead ends: 2011 [2022-02-18 14:50:43,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1206, Invalid=4800, Unknown=0, NotChecked=0, Total=6006 [2022-02-18 14:50:43,686 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 780 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:43,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 2459 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:50:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2022-02-18 14:50:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 887. [2022-02-18 14:50:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 2.6975169300225734) internal successors, (2390), 886 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 2390 transitions. [2022-02-18 14:50:43,719 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 2390 transitions. Word has length 69 [2022-02-18 14:50:43,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:43,719 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 2390 transitions. [2022-02-18 14:50:43,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:43,720 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 2390 transitions. [2022-02-18 14:50:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:43,722 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:43,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:43,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:43,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:43,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1198258893, now seen corresponding path program 10 times [2022-02-18 14:50:43,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:43,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709580485] [2022-02-18 14:50:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:44,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:44,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709580485] [2022-02-18 14:50:44,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709580485] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:44,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926989145] [2022-02-18 14:50:44,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:50:44,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:44,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:44,156 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) [2022-02-18 14:50:44,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-18 14:50:44,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:50:44,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:44,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:44,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:44,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:45,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926989145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:45,310 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:45,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-02-18 14:50:45,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837686297] [2022-02-18 14:50:45,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:45,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-18 14:50:45,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-18 14:50:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-02-18 14:50:45,311 INFO L87 Difference]: Start difference. First operand 887 states and 2390 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:46,754 INFO L93 Difference]: Finished difference Result 1772 states and 4693 transitions. [2022-02-18 14:50:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-18 14:50:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:46,759 INFO L225 Difference]: With dead ends: 1772 [2022-02-18 14:50:46,760 INFO L226 Difference]: Without dead ends: 1706 [2022-02-18 14:50:46,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=795, Invalid=3111, Unknown=0, NotChecked=0, Total=3906 [2022-02-18 14:50:46,761 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 625 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:46,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2327 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:50:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2022-02-18 14:50:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 867. [2022-02-18 14:50:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6732101616628174) internal successors, (2315), 866 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2315 transitions. [2022-02-18 14:50:46,784 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2315 transitions. Word has length 69 [2022-02-18 14:50:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:46,784 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2315 transitions. [2022-02-18 14:50:46,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2315 transitions. [2022-02-18 14:50:46,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:46,787 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:46,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:46,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:47,011 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,SelfDestructingSolverStorable12 [2022-02-18 14:50:47,011 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash 48795301, now seen corresponding path program 11 times [2022-02-18 14:50:47,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:47,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583759796] [2022-02-18 14:50:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:47,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:47,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583759796] [2022-02-18 14:50:47,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583759796] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:47,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222414328] [2022-02-18 14:50:47,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:50:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:47,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:47,049 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) [2022-02-18 14:50:47,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-18 14:50:47,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:50:47,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-18 14:50:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:47,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:47,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222414328] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:47,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:47,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-18 14:50:47,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479407336] [2022-02-18 14:50:47,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:47,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-18 14:50:47,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-18 14:50:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-18 14:50:47,434 INFO L87 Difference]: Start difference. First operand 867 states and 2315 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:47,469 INFO L93 Difference]: Finished difference Result 890 states and 2337 transitions. [2022-02-18 14:50:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-18 14:50:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:47,472 INFO L225 Difference]: With dead ends: 890 [2022-02-18 14:50:47,472 INFO L226 Difference]: Without dead ends: 890 [2022-02-18 14:50:47,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-18 14:50:47,473 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 25 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:47,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 258 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:50:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-02-18 14:50:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 812. [2022-02-18 14:50:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.62268803945746) internal successors, (2127), 811 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2127 transitions. [2022-02-18 14:50:47,489 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2127 transitions. Word has length 69 [2022-02-18 14:50:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:47,489 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2127 transitions. [2022-02-18 14:50:47,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2127 transitions. [2022-02-18 14:50:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:47,494 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:47,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:47,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:47,720 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,SelfDestructingSolverStorable13 [2022-02-18 14:50:47,721 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash -908930907, now seen corresponding path program 12 times [2022-02-18 14:50:47,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:47,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435743241] [2022-02-18 14:50:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:47,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:47,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435743241] [2022-02-18 14:50:47,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435743241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:47,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640414020] [2022-02-18 14:50:47,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:50:47,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:47,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:47,963 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) [2022-02-18 14:50:47,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-18 14:50:48,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:50:48,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:48,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-18 14:50:48,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:48,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:49,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640414020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:49,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:49,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 38 [2022-02-18 14:50:49,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177421074] [2022-02-18 14:50:49,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:49,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:50:49,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:49,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:50:49,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:50:49,445 INFO L87 Difference]: Start difference. First operand 812 states and 2127 transitions. Second operand has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:52,469 INFO L93 Difference]: Finished difference Result 2429 states and 6136 transitions. [2022-02-18 14:50:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-18 14:50:52,469 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:52,473 INFO L225 Difference]: With dead ends: 2429 [2022-02-18 14:50:52,473 INFO L226 Difference]: Without dead ends: 2276 [2022-02-18 14:50:52,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1779, Invalid=7533, Unknown=0, NotChecked=0, Total=9312 [2022-02-18 14:50:52,475 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1254 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:52,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2496 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:50:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2022-02-18 14:50:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 924. [2022-02-18 14:50:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 2.6901408450704225) internal successors, (2483), 923 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2483 transitions. [2022-02-18 14:50:52,504 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2483 transitions. Word has length 69 [2022-02-18 14:50:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:52,504 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2483 transitions. [2022-02-18 14:50:52,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2483 transitions. [2022-02-18 14:50:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:52,507 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:52,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:52,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:52,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-18 14:50:52,731 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1582804163, now seen corresponding path program 13 times [2022-02-18 14:50:52,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:52,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434891309] [2022-02-18 14:50:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:52,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:52,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434891309] [2022-02-18 14:50:52,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434891309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:52,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046534438] [2022-02-18 14:50:52,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:50:52,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:52,960 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) [2022-02-18 14:50:52,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-18 14:50:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:53,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:53,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:53,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:54,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046534438] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:54,119 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:54,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:50:54,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298354610] [2022-02-18 14:50:54,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:54,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:50:54,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:50:54,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:50:54,120 INFO L87 Difference]: Start difference. First operand 924 states and 2483 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:56,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:56,500 INFO L93 Difference]: Finished difference Result 2468 states and 6446 transitions. [2022-02-18 14:50:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-18 14:50:56,501 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:56,505 INFO L225 Difference]: With dead ends: 2468 [2022-02-18 14:50:56,505 INFO L226 Difference]: Without dead ends: 2240 [2022-02-18 14:50:56,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1135, Invalid=4871, Unknown=0, NotChecked=0, Total=6006 [2022-02-18 14:50:56,506 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 879 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:56,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 2454 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:50:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-02-18 14:50:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 1068. [2022-02-18 14:50:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 2.7544517338331773) internal successors, (2939), 1067 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2939 transitions. [2022-02-18 14:50:56,544 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2939 transitions. Word has length 69 [2022-02-18 14:50:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:56,544 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2939 transitions. [2022-02-18 14:50:56,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2939 transitions. [2022-02-18 14:50:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:56,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:56,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:56,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-18 14:50:56,767 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,SelfDestructingSolverStorable15 [2022-02-18 14:50:56,767 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:50:56,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:50:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash -343361627, now seen corresponding path program 14 times [2022-02-18 14:50:56,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:50:56,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540761597] [2022-02-18 14:50:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:50:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:50:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:50:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:56,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:50:56,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540761597] [2022-02-18 14:50:56,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540761597] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:50:56,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311694678] [2022-02-18 14:50:56,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:50:56,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:50:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:50:56,957 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) [2022-02-18 14:50:56,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-18 14:50:57,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:50:57,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:50:57,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:50:57,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:50:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:57,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:50:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:50:57,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311694678] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:50:57,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:50:57,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:50:57,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485038448] [2022-02-18 14:50:57,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:50:57,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:50:57,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:50:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:50:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:50:57,931 INFO L87 Difference]: Start difference. First operand 1068 states and 2939 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:59,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:50:59,861 INFO L93 Difference]: Finished difference Result 2026 states and 5403 transitions. [2022-02-18 14:50:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-18 14:50:59,862 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:50:59,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:50:59,868 INFO L225 Difference]: With dead ends: 2026 [2022-02-18 14:50:59,869 INFO L226 Difference]: Without dead ends: 1924 [2022-02-18 14:50:59,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=854, Invalid=3838, Unknown=0, NotChecked=0, Total=4692 [2022-02-18 14:50:59,870 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 563 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:50:59,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 2080 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:50:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-02-18 14:50:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1064. [2022-02-18 14:50:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 2.750705550329257) internal successors, (2924), 1063 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 2924 transitions. [2022-02-18 14:50:59,917 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 2924 transitions. Word has length 69 [2022-02-18 14:50:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:50:59,917 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 2924 transitions. [2022-02-18 14:50:59,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:50:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 2924 transitions. [2022-02-18 14:50:59,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:50:59,920 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:50:59,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:50:59,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:00,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:00,139 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1942125631, now seen corresponding path program 15 times [2022-02-18 14:51:00,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:00,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416029225] [2022-02-18 14:51:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:00,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:00,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416029225] [2022-02-18 14:51:00,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416029225] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:00,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910390556] [2022-02-18 14:51:00,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:00,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:00,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:00,360 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) [2022-02-18 14:51:00,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-18 14:51:00,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:51:00,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:00,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:00,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:00,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:01,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910390556] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:01,310 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:01,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:51:01,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139089372] [2022-02-18 14:51:01,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:01,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:51:01,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:51:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:51:01,312 INFO L87 Difference]: Start difference. First operand 1064 states and 2924 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:02,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:02,011 INFO L93 Difference]: Finished difference Result 1621 states and 4399 transitions. [2022-02-18 14:51:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-18 14:51:02,012 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:02,016 INFO L225 Difference]: With dead ends: 1621 [2022-02-18 14:51:02,016 INFO L226 Difference]: Without dead ends: 1570 [2022-02-18 14:51:02,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2022-02-18 14:51:02,017 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 325 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:02,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 1959 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:51:02,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-02-18 14:51:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1060. [2022-02-18 14:51:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 2.7469310670443816) internal successors, (2909), 1059 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2909 transitions. [2022-02-18 14:51:02,044 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2909 transitions. Word has length 69 [2022-02-18 14:51:02,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:02,044 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2909 transitions. [2022-02-18 14:51:02,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2909 transitions. [2022-02-18 14:51:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:02,048 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:02,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:02,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:02,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-18 14:51:02,273 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2019223453, now seen corresponding path program 16 times [2022-02-18 14:51:02,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:02,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199980180] [2022-02-18 14:51:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:02,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:02,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199980180] [2022-02-18 14:51:02,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199980180] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:02,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245838020] [2022-02-18 14:51:02,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:02,474 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) [2022-02-18 14:51:02,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-18 14:51:02,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:02,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:02,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:02,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:02,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:03,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245838020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:03,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:03,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:03,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709058919] [2022-02-18 14:51:03,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:03,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:03,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:03,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:03,438 INFO L87 Difference]: Start difference. First operand 1060 states and 2909 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:06,542 INFO L93 Difference]: Finished difference Result 2839 states and 7556 transitions. [2022-02-18 14:51:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-18 14:51:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:06,555 INFO L225 Difference]: With dead ends: 2839 [2022-02-18 14:51:06,555 INFO L226 Difference]: Without dead ends: 2692 [2022-02-18 14:51:06,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1699, Invalid=7231, Unknown=0, NotChecked=0, Total=8930 [2022-02-18 14:51:06,557 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 826 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:06,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2512 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:51:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-02-18 14:51:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1172. [2022-02-18 14:51:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.788215200683177) internal successors, (3265), 1171 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3265 transitions. [2022-02-18 14:51:06,610 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3265 transitions. Word has length 69 [2022-02-18 14:51:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:06,610 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3265 transitions. [2022-02-18 14:51:06,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3265 transitions. [2022-02-18 14:51:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:06,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:06,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:06,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:06,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:06,827 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash -205219233, now seen corresponding path program 17 times [2022-02-18 14:51:06,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:06,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507719193] [2022-02-18 14:51:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:07,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:07,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507719193] [2022-02-18 14:51:07,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507719193] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:07,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175082718] [2022-02-18 14:51:07,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:07,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:07,014 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) [2022-02-18 14:51:07,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-18 14:51:07,064 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:07,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:07,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:07,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:07,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:07,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175082718] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:07,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:07,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:07,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533246136] [2022-02-18 14:51:07,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:07,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:07,845 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:07,846 INFO L87 Difference]: Start difference. First operand 1172 states and 3265 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:09,548 INFO L93 Difference]: Finished difference Result 2465 states and 6507 transitions. [2022-02-18 14:51:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-18 14:51:09,549 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:09,555 INFO L225 Difference]: With dead ends: 2465 [2022-02-18 14:51:09,555 INFO L226 Difference]: Without dead ends: 2258 [2022-02-18 14:51:09,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006 [2022-02-18 14:51:09,556 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 583 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:09,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2671 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-02-18 14:51:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1172. [2022-02-18 14:51:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.774551665243382) internal successors, (3249), 1171 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3249 transitions. [2022-02-18 14:51:09,605 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3249 transitions. Word has length 69 [2022-02-18 14:51:09,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:09,605 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3249 transitions. [2022-02-18 14:51:09,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:09,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3249 transitions. [2022-02-18 14:51:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:09,609 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:09,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:09,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:09,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:09,820 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash 464520227, now seen corresponding path program 18 times [2022-02-18 14:51:09,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:09,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976314185] [2022-02-18 14:51:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:10,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:10,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976314185] [2022-02-18 14:51:10,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976314185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:10,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869750303] [2022-02-18 14:51:10,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:10,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:10,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:10,045 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) [2022-02-18 14:51:10,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-18 14:51:10,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-18 14:51:10,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:10,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:10,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:10,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:10,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869750303] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:10,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:10,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:10,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703880764] [2022-02-18 14:51:10,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:10,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:10,962 INFO L87 Difference]: Start difference. First operand 1172 states and 3249 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:12,400 INFO L93 Difference]: Finished difference Result 2091 states and 5680 transitions. [2022-02-18 14:51:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-18 14:51:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:12,405 INFO L225 Difference]: With dead ends: 2091 [2022-02-18 14:51:12,405 INFO L226 Difference]: Without dead ends: 2025 [2022-02-18 14:51:12,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=729, Invalid=3303, Unknown=0, NotChecked=0, Total=4032 [2022-02-18 14:51:12,406 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 454 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:12,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 2351 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2022-02-18 14:51:12,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1180. [2022-02-18 14:51:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 2.7777777777777777) internal successors, (3275), 1179 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3275 transitions. [2022-02-18 14:51:12,435 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3275 transitions. Word has length 69 [2022-02-18 14:51:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:12,436 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 3275 transitions. [2022-02-18 14:51:12,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3275 transitions. [2022-02-18 14:51:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:12,439 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:12,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:12,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:12,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:12,655 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:12,656 INFO L85 PathProgramCache]: Analyzing trace with hash -956181783, now seen corresponding path program 19 times [2022-02-18 14:51:12,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:12,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440064349] [2022-02-18 14:51:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:12,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:12,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:12,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440064349] [2022-02-18 14:51:12,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440064349] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:12,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688603775] [2022-02-18 14:51:12,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:12,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:12,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:12,868 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:12,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-18 14:51:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:12,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:12,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:13,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:13,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688603775] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:13,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:13,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:13,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793057280] [2022-02-18 14:51:13,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:13,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:13,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:13,839 INFO L87 Difference]: Start difference. First operand 1180 states and 3275 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:14,976 INFO L93 Difference]: Finished difference Result 2014 states and 5484 transitions. [2022-02-18 14:51:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-18 14:51:14,977 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:14,987 INFO L225 Difference]: With dead ends: 2014 [2022-02-18 14:51:14,988 INFO L226 Difference]: Without dead ends: 1963 [2022-02-18 14:51:14,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=560, Invalid=2746, Unknown=0, NotChecked=0, Total=3306 [2022-02-18 14:51:14,988 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 411 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:14,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 2125 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:51:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-02-18 14:51:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1176. [2022-02-18 14:51:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 2.774468085106383) internal successors, (3260), 1175 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3260 transitions. [2022-02-18 14:51:15,023 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3260 transitions. Word has length 69 [2022-02-18 14:51:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:15,023 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 3260 transitions. [2022-02-18 14:51:15,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3260 transitions. [2022-02-18 14:51:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:15,026 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:15,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:15,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:15,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:15,239 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1313391633, now seen corresponding path program 20 times [2022-02-18 14:51:15,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:15,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38705901] [2022-02-18 14:51:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:15,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:15,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:15,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38705901] [2022-02-18 14:51:15,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38705901] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:15,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438339458] [2022-02-18 14:51:15,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:15,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:15,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:15,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-18 14:51:15,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:15,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:15,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:15,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:15,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:16,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438339458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:16,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:16,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:16,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001513152] [2022-02-18 14:51:16,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:16,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:16,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:16,442 INFO L87 Difference]: Start difference. First operand 1176 states and 3260 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:17,702 INFO L93 Difference]: Finished difference Result 2014 states and 5492 transitions. [2022-02-18 14:51:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-18 14:51:17,702 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:17,705 INFO L225 Difference]: With dead ends: 2014 [2022-02-18 14:51:17,705 INFO L226 Difference]: Without dead ends: 1948 [2022-02-18 14:51:17,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=677, Invalid=2629, Unknown=0, NotChecked=0, Total=3306 [2022-02-18 14:51:17,706 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 420 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:17,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 2250 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:17,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-02-18 14:51:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1184. [2022-02-18 14:51:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 2.7810650887573964) internal successors, (3290), 1183 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 3290 transitions. [2022-02-18 14:51:17,730 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 3290 transitions. Word has length 69 [2022-02-18 14:51:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:17,731 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 3290 transitions. [2022-02-18 14:51:17,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 3290 transitions. [2022-02-18 14:51:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:17,734 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:17,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:17,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:17,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-18 14:51:17,956 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1560873653, now seen corresponding path program 21 times [2022-02-18 14:51:17,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:17,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097792382] [2022-02-18 14:51:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:18,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:18,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097792382] [2022-02-18 14:51:18,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097792382] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:18,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431676468] [2022-02-18 14:51:18,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:18,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:18,168 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:18,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-18 14:51:18,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:51:18,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:18,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:18,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:18,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:19,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431676468] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:19,168 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:19,168 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:19,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53581153] [2022-02-18 14:51:19,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:19,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:19,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:19,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:19,170 INFO L87 Difference]: Start difference. First operand 1184 states and 3290 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:21,207 INFO L93 Difference]: Finished difference Result 2258 states and 6093 transitions. [2022-02-18 14:51:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-18 14:51:21,208 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:21,211 INFO L225 Difference]: With dead ends: 2258 [2022-02-18 14:51:21,211 INFO L226 Difference]: Without dead ends: 2156 [2022-02-18 14:51:21,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=876, Invalid=4094, Unknown=0, NotChecked=0, Total=4970 [2022-02-18 14:51:21,212 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 580 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:21,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 2424 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-02-18 14:51:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1176. [2022-02-18 14:51:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 2.777872340425532) internal successors, (3264), 1175 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 3264 transitions. [2022-02-18 14:51:21,236 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 3264 transitions. Word has length 69 [2022-02-18 14:51:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:21,237 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 3264 transitions. [2022-02-18 14:51:21,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 3264 transitions. [2022-02-18 14:51:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:21,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:21,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:21,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:21,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-18 14:51:21,463 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -448606385, now seen corresponding path program 22 times [2022-02-18 14:51:21,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:21,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910074350] [2022-02-18 14:51:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:21,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:21,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910074350] [2022-02-18 14:51:21,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910074350] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:21,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082139400] [2022-02-18 14:51:21,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:21,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:21,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:21,694 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:21,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-18 14:51:21,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:21,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:21,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:21,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:22,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:22,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082139400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:22,591 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:22,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:22,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202741960] [2022-02-18 14:51:22,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:22,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:22,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:22,592 INFO L87 Difference]: Start difference. First operand 1176 states and 3264 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:23,260 INFO L93 Difference]: Finished difference Result 1749 states and 4783 transitions. [2022-02-18 14:51:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-18 14:51:23,260 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:23,263 INFO L225 Difference]: With dead ends: 1749 [2022-02-18 14:51:23,263 INFO L226 Difference]: Without dead ends: 1698 [2022-02-18 14:51:23,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=419, Invalid=1651, Unknown=0, NotChecked=0, Total=2070 [2022-02-18 14:51:23,264 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 348 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:23,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1669 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-02-18 14:51:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1172. [2022-02-18 14:51:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.774551665243382) internal successors, (3249), 1171 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3249 transitions. [2022-02-18 14:51:23,284 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3249 transitions. Word has length 69 [2022-02-18 14:51:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:23,284 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3249 transitions. [2022-02-18 14:51:23,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3249 transitions. [2022-02-18 14:51:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:23,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:23,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:23,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-18 14:51:23,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:23,492 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1704619901, now seen corresponding path program 23 times [2022-02-18 14:51:23,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:23,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341880476] [2022-02-18 14:51:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:23,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:23,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:23,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341880476] [2022-02-18 14:51:23,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341880476] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:23,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565633323] [2022-02-18 14:51:23,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:23,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:23,686 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:23,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-18 14:51:23,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:51:23,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:23,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:24,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:24,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565633323] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:24,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:24,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:51:24,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654420248] [2022-02-18 14:51:24,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:24,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:51:24,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:24,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:51:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:51:24,574 INFO L87 Difference]: Start difference. First operand 1172 states and 3249 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:26,790 INFO L93 Difference]: Finished difference Result 2791 states and 7406 transitions. [2022-02-18 14:51:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-18 14:51:26,790 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:26,794 INFO L225 Difference]: With dead ends: 2791 [2022-02-18 14:51:26,794 INFO L226 Difference]: Without dead ends: 2512 [2022-02-18 14:51:26,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1200, Invalid=5442, Unknown=0, NotChecked=0, Total=6642 [2022-02-18 14:51:26,795 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1028 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:26,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2147 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-02-18 14:51:26,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1356. [2022-02-18 14:51:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 2.8243542435424356) internal successors, (3827), 1355 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3827 transitions. [2022-02-18 14:51:26,818 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3827 transitions. Word has length 69 [2022-02-18 14:51:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:26,818 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 3827 transitions. [2022-02-18 14:51:26,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3827 transitions. [2022-02-18 14:51:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:26,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:26,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:26,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:27,034 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1350904859, now seen corresponding path program 24 times [2022-02-18 14:51:27,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:27,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141713270] [2022-02-18 14:51:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:27,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:27,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:27,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141713270] [2022-02-18 14:51:27,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141713270] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:27,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026860752] [2022-02-18 14:51:27,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:27,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:27,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:27,264 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:27,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-18 14:51:27,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-18 14:51:27,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:27,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:27,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:27,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:28,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026860752] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:28,203 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:28,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:51:28,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103531687] [2022-02-18 14:51:28,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:28,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:51:28,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:51:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:51:28,205 INFO L87 Difference]: Start difference. First operand 1356 states and 3827 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:31,029 INFO L93 Difference]: Finished difference Result 3128 states and 8471 transitions. [2022-02-18 14:51:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-18 14:51:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:31,034 INFO L225 Difference]: With dead ends: 3128 [2022-02-18 14:51:31,034 INFO L226 Difference]: Without dead ends: 2975 [2022-02-18 14:51:31,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1264, Invalid=6926, Unknown=0, NotChecked=0, Total=8190 [2022-02-18 14:51:31,035 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 816 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:31,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2627 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:51:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2022-02-18 14:51:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1572. [2022-02-18 14:51:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 2.872692552514322) internal successors, (4513), 1571 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 4513 transitions. [2022-02-18 14:51:31,062 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 4513 transitions. Word has length 69 [2022-02-18 14:51:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:31,063 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 4513 transitions. [2022-02-18 14:51:31,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 4513 transitions. [2022-02-18 14:51:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:31,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:31,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:31,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:31,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-18 14:51:31,279 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash 934582399, now seen corresponding path program 25 times [2022-02-18 14:51:31,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:31,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615587324] [2022-02-18 14:51:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:31,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:31,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615587324] [2022-02-18 14:51:31,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615587324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:31,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015934129] [2022-02-18 14:51:31,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:31,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:31,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:31,528 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:31,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-18 14:51:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:31,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:31,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:31,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:32,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015934129] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:32,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:32,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:51:32,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136259454] [2022-02-18 14:51:32,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:32,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:51:32,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:51:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:51:32,479 INFO L87 Difference]: Start difference. First operand 1572 states and 4513 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:33,174 INFO L93 Difference]: Finished difference Result 2317 states and 6471 transitions. [2022-02-18 14:51:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-18 14:51:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:33,178 INFO L225 Difference]: With dead ends: 2317 [2022-02-18 14:51:33,178 INFO L226 Difference]: Without dead ends: 2266 [2022-02-18 14:51:33,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2022-02-18 14:51:33,179 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 380 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:33,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1669 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:51:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2022-02-18 14:51:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1568. [2022-02-18 14:51:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 2.8704530950861518) internal successors, (4498), 1567 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 4498 transitions. [2022-02-18 14:51:33,205 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 4498 transitions. Word has length 69 [2022-02-18 14:51:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:33,205 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 4498 transitions. [2022-02-18 14:51:33,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 4498 transitions. [2022-02-18 14:51:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:33,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:33,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:33,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:33,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-18 14:51:33,423 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:33,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash 331809321, now seen corresponding path program 26 times [2022-02-18 14:51:33,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:33,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704833262] [2022-02-18 14:51:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:33,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:33,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704833262] [2022-02-18 14:51:33,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704833262] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:33,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316653609] [2022-02-18 14:51:33,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:33,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:33,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:33,636 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:33,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-18 14:51:33,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:33,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:33,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:33,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:34,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:34,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316653609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:34,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:34,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:51:34,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431543678] [2022-02-18 14:51:34,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:34,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:51:34,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:51:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:51:34,569 INFO L87 Difference]: Start difference. First operand 1568 states and 4498 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:37,193 INFO L93 Difference]: Finished difference Result 3173 states and 8646 transitions. [2022-02-18 14:51:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-18 14:51:37,194 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:37,198 INFO L225 Difference]: With dead ends: 3173 [2022-02-18 14:51:37,199 INFO L226 Difference]: Without dead ends: 2882 [2022-02-18 14:51:37,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1228, Invalid=5744, Unknown=0, NotChecked=0, Total=6972 [2022-02-18 14:51:37,200 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 803 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:37,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2913 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:51:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-02-18 14:51:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1452. [2022-02-18 14:51:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 2.8442453480358374) internal successors, (4127), 1451 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4127 transitions. [2022-02-18 14:51:37,227 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4127 transitions. Word has length 69 [2022-02-18 14:51:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:37,227 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 4127 transitions. [2022-02-18 14:51:37,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4127 transitions. [2022-02-18 14:51:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:37,231 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:37,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:37,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:37,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-18 14:51:37,453 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:37,454 INFO L85 PathProgramCache]: Analyzing trace with hash -104609969, now seen corresponding path program 27 times [2022-02-18 14:51:37,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:37,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179349076] [2022-02-18 14:51:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:37,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:37,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179349076] [2022-02-18 14:51:37,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179349076] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:37,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180831483] [2022-02-18 14:51:37,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:51:37,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:37,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:37,644 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:37,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-18 14:51:37,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-18 14:51:37,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:37,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:37,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:38,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:38,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180831483] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:38,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:38,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:38,479 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460733181] [2022-02-18 14:51:38,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:38,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:38,479 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:38,480 INFO L87 Difference]: Start difference. First operand 1452 states and 4127 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:41,297 INFO L93 Difference]: Finished difference Result 3152 states and 8503 transitions. [2022-02-18 14:51:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-18 14:51:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:41,302 INFO L225 Difference]: With dead ends: 3152 [2022-02-18 14:51:41,302 INFO L226 Difference]: Without dead ends: 2981 [2022-02-18 14:51:41,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1769, Invalid=7737, Unknown=0, NotChecked=0, Total=9506 [2022-02-18 14:51:41,303 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1083 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:41,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 2541 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-02-18 14:51:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1524. [2022-02-18 14:51:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 2.866053841103086) internal successors, (4365), 1523 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 4365 transitions. [2022-02-18 14:51:41,339 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 4365 transitions. Word has length 69 [2022-02-18 14:51:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:41,340 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 4365 transitions. [2022-02-18 14:51:41,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 4365 transitions. [2022-02-18 14:51:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:41,343 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:41,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:41,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:41,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:41,566 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:41,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1709394251, now seen corresponding path program 28 times [2022-02-18 14:51:41,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:41,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573511545] [2022-02-18 14:51:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:41,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:41,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573511545] [2022-02-18 14:51:41,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573511545] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:41,776 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565318692] [2022-02-18 14:51:41,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:51:41,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:41,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:41,777 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:41,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-18 14:51:41,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:51:41,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:41,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:41,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:42,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:42,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565318692] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:42,631 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:42,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:42,631 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560423936] [2022-02-18 14:51:42,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:42,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:42,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:42,632 INFO L87 Difference]: Start difference. First operand 1524 states and 4365 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:44,299 INFO L93 Difference]: Finished difference Result 2664 states and 7210 transitions. [2022-02-18 14:51:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-18 14:51:44,299 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:44,303 INFO L225 Difference]: With dead ends: 2664 [2022-02-18 14:51:44,303 INFO L226 Difference]: Without dead ends: 2457 [2022-02-18 14:51:44,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=970, Invalid=4882, Unknown=0, NotChecked=0, Total=5852 [2022-02-18 14:51:44,305 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 683 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:44,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2359 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2022-02-18 14:51:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1384. [2022-02-18 14:51:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 2.81706435285611) internal successors, (3896), 1383 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 3896 transitions. [2022-02-18 14:51:44,329 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 3896 transitions. Word has length 69 [2022-02-18 14:51:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:44,330 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 3896 transitions. [2022-02-18 14:51:44,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 3896 transitions. [2022-02-18 14:51:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:44,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:44,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:44,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-18 14:51:44,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:44,533 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:44,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1915833585, now seen corresponding path program 29 times [2022-02-18 14:51:44,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:44,533 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800126697] [2022-02-18 14:51:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:44,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:44,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800126697] [2022-02-18 14:51:44,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800126697] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:44,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927494998] [2022-02-18 14:51:44,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:51:44,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:44,749 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:44,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-18 14:51:44,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:44,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:44,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:44,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:45,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:45,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927494998] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:45,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:45,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:45,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488365205] [2022-02-18 14:51:45,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:45,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:45,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:45,653 INFO L87 Difference]: Start difference. First operand 1384 states and 3896 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:48,960 INFO L93 Difference]: Finished difference Result 3219 states and 8750 transitions. [2022-02-18 14:51:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-18 14:51:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:48,966 INFO L225 Difference]: With dead ends: 3219 [2022-02-18 14:51:48,967 INFO L226 Difference]: Without dead ends: 3087 [2022-02-18 14:51:48,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3968 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1837, Invalid=9719, Unknown=0, NotChecked=0, Total=11556 [2022-02-18 14:51:48,968 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 948 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:48,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2820 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:51:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2022-02-18 14:51:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 1488. [2022-02-18 14:51:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 2.828513786146604) internal successors, (4206), 1487 states have internal predecessors, (4206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 4206 transitions. [2022-02-18 14:51:49,001 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 4206 transitions. Word has length 69 [2022-02-18 14:51:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:49,001 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 4206 transitions. [2022-02-18 14:51:49,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 4206 transitions. [2022-02-18 14:51:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:49,005 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:49,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:49,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:49,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:49,219 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:49,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 958431701, now seen corresponding path program 30 times [2022-02-18 14:51:49,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:49,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685499683] [2022-02-18 14:51:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:49,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:49,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685499683] [2022-02-18 14:51:49,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685499683] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:49,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698661890] [2022-02-18 14:51:49,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:51:49,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:49,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:49,429 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:49,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-18 14:51:49,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:51:49,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:49,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:49,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:49,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:50,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698661890] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:50,321 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:50,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:50,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045068128] [2022-02-18 14:51:50,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:50,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:50,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:50,322 INFO L87 Difference]: Start difference. First operand 1488 states and 4206 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:52,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:52,558 INFO L93 Difference]: Finished difference Result 3009 states and 8256 transitions. [2022-02-18 14:51:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-18 14:51:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:52,563 INFO L225 Difference]: With dead ends: 3009 [2022-02-18 14:51:52,563 INFO L226 Difference]: Without dead ends: 2907 [2022-02-18 14:51:52,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1195, Invalid=6637, Unknown=0, NotChecked=0, Total=7832 [2022-02-18 14:51:52,564 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 627 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:52,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2403 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:51:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2022-02-18 14:51:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1504. [2022-02-18 14:51:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.8276779773785763) internal successors, (4250), 1503 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4250 transitions. [2022-02-18 14:51:52,588 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4250 transitions. Word has length 69 [2022-02-18 14:51:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:52,589 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4250 transitions. [2022-02-18 14:51:52,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4250 transitions. [2022-02-18 14:51:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:52,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:52,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:52,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-18 14:51:52,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-02-18 14:51:52,792 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 601221851, now seen corresponding path program 31 times [2022-02-18 14:51:52,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:52,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478353986] [2022-02-18 14:51:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:52,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:53,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:53,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478353986] [2022-02-18 14:51:53,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478353986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:53,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583528371] [2022-02-18 14:51:53,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:51:53,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:53,003 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:53,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-18 14:51:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:53,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:53,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:53,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:53,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583528371] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:53,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:53,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:53,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202867155] [2022-02-18 14:51:53,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:53,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:53,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:53,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:53,832 INFO L87 Difference]: Start difference. First operand 1504 states and 4250 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:51:56,291 INFO L93 Difference]: Finished difference Result 3046 states and 8326 transitions. [2022-02-18 14:51:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-18 14:51:56,292 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:51:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:51:56,296 INFO L225 Difference]: With dead ends: 3046 [2022-02-18 14:51:56,296 INFO L226 Difference]: Without dead ends: 2914 [2022-02-18 14:51:56,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1245, Invalid=5895, Unknown=0, NotChecked=0, Total=7140 [2022-02-18 14:51:56,297 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 793 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:51:56,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2534 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:51:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2022-02-18 14:51:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1604. [2022-02-18 14:51:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 2.835308796007486) internal successors, (4545), 1603 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 4545 transitions. [2022-02-18 14:51:56,327 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 4545 transitions. Word has length 69 [2022-02-18 14:51:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:51:56,328 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 4545 transitions. [2022-02-18 14:51:56,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:51:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 4545 transitions. [2022-02-18 14:51:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:51:56,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:51:56,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:51:56,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-18 14:51:56,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:56,544 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:51:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:51:56,544 INFO L85 PathProgramCache]: Analyzing trace with hash -819480159, now seen corresponding path program 32 times [2022-02-18 14:51:56,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:51:56,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866376554] [2022-02-18 14:51:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:51:56,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:51:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:51:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:56,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:51:56,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866376554] [2022-02-18 14:51:56,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866376554] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:51:56,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630658225] [2022-02-18 14:51:56,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:51:56,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:51:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:51:56,748 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:51:56,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-18 14:51:56,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:51:56,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:51:56,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:51:56,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:51:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:57,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:51:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:51:57,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630658225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:51:57,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:51:57,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:51:57,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253980265] [2022-02-18 14:51:57,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:51:57,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:51:57,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:51:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:51:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:51:57,661 INFO L87 Difference]: Start difference. First operand 1604 states and 4545 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:01,142 INFO L93 Difference]: Finished difference Result 3721 states and 10256 transitions. [2022-02-18 14:52:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-18 14:52:01,142 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:01,148 INFO L225 Difference]: With dead ends: 3721 [2022-02-18 14:52:01,148 INFO L226 Difference]: Without dead ends: 3568 [2022-02-18 14:52:01,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1592, Invalid=9120, Unknown=0, NotChecked=0, Total=10712 [2022-02-18 14:52:01,149 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 643 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:01,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 2574 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-02-18 14:52:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 1820. [2022-02-18 14:52:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1819 states have (on average 2.862561847168774) internal successors, (5207), 1819 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 5207 transitions. [2022-02-18 14:52:01,180 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 5207 transitions. Word has length 69 [2022-02-18 14:52:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:01,180 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 5207 transitions. [2022-02-18 14:52:01,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 5207 transitions. [2022-02-18 14:52:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:01,183 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:01,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:01,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:01,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:01,384 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1466007099, now seen corresponding path program 33 times [2022-02-18 14:52:01,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:01,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506828794] [2022-02-18 14:52:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:01,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:01,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:01,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506828794] [2022-02-18 14:52:01,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506828794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:01,608 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184020819] [2022-02-18 14:52:01,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:52:01,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:01,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:01,610 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:01,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-18 14:52:01,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:52:01,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:01,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:02,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:02,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184020819] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:02,417 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:02,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:02,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259227731] [2022-02-18 14:52:02,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:02,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:02,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:02,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:02,419 INFO L87 Difference]: Start difference. First operand 1820 states and 5207 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:03,299 INFO L93 Difference]: Finished difference Result 2637 states and 7401 transitions. [2022-02-18 14:52:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-18 14:52:03,299 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:03,304 INFO L225 Difference]: With dead ends: 2637 [2022-02-18 14:52:03,304 INFO L226 Difference]: Without dead ends: 2586 [2022-02-18 14:52:03,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=550, Invalid=2312, Unknown=0, NotChecked=0, Total=2862 [2022-02-18 14:52:03,305 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 285 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:03,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2089 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 14:52:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2022-02-18 14:52:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 1816. [2022-02-18 14:52:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 2.860606060606061) internal successors, (5192), 1815 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 5192 transitions. [2022-02-18 14:52:03,343 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 5192 transitions. Word has length 69 [2022-02-18 14:52:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:03,343 INFO L470 AbstractCegarLoop]: Abstraction has 1816 states and 5192 transitions. [2022-02-18 14:52:03,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 5192 transitions. [2022-02-18 14:52:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:03,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:03,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:03,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:03,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-18 14:52:03,547 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash 407050943, now seen corresponding path program 34 times [2022-02-18 14:52:03,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:03,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064312704] [2022-02-18 14:52:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:03,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:03,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064312704] [2022-02-18 14:52:03,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064312704] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:03,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996316749] [2022-02-18 14:52:03,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:52:03,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:03,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:03,750 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:03,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-18 14:52:03,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:52:03,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:03,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:03,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:04,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:04,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996316749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:04,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:04,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:52:04,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383504855] [2022-02-18 14:52:04,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:04,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:04,627 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:04,628 INFO L87 Difference]: Start difference. First operand 1816 states and 5192 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:06,804 INFO L93 Difference]: Finished difference Result 3602 states and 9801 transitions. [2022-02-18 14:52:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-18 14:52:06,805 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:06,810 INFO L225 Difference]: With dead ends: 3602 [2022-02-18 14:52:06,811 INFO L226 Difference]: Without dead ends: 3398 [2022-02-18 14:52:06,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1748 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1217, Invalid=4945, Unknown=0, NotChecked=0, Total=6162 [2022-02-18 14:52:06,811 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 948 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:06,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2317 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-02-18 14:52:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1932. [2022-02-18 14:52:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 2.8788192646297257) internal successors, (5559), 1931 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 5559 transitions. [2022-02-18 14:52:06,845 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 5559 transitions. Word has length 69 [2022-02-18 14:52:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:06,846 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 5559 transitions. [2022-02-18 14:52:06,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 5559 transitions. [2022-02-18 14:52:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:06,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:06,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:06,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:07,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-18 14:52:07,050 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:07,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash -266822313, now seen corresponding path program 35 times [2022-02-18 14:52:07,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:07,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288491033] [2022-02-18 14:52:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:07,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:07,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288491033] [2022-02-18 14:52:07,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288491033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:07,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025128786] [2022-02-18 14:52:07,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:52:07,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:07,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:07,254 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:07,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-18 14:52:07,326 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:52:07,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:07,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:07,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:08,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025128786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:08,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:08,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:52:08,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826864898] [2022-02-18 14:52:08,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:08,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:08,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:08,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:08,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:08,191 INFO L87 Difference]: Start difference. First operand 1932 states and 5559 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:10,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:10,051 INFO L93 Difference]: Finished difference Result 3241 states and 8902 transitions. [2022-02-18 14:52:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-18 14:52:10,052 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:10,057 INFO L225 Difference]: With dead ends: 3241 [2022-02-18 14:52:10,057 INFO L226 Difference]: Without dead ends: 3013 [2022-02-18 14:52:10,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=851, Invalid=3571, Unknown=0, NotChecked=0, Total=4422 [2022-02-18 14:52:10,057 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 734 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:10,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 2295 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:52:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2022-02-18 14:52:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 1908. [2022-02-18 14:52:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 2.859465128474043) internal successors, (5453), 1907 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 5453 transitions. [2022-02-18 14:52:10,088 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 5453 transitions. Word has length 69 [2022-02-18 14:52:10,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:10,088 INFO L470 AbstractCegarLoop]: Abstraction has 1908 states and 5453 transitions. [2022-02-18 14:52:10,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 5453 transitions. [2022-02-18 14:52:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:10,092 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:10,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:10,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:10,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-18 14:52:10,292 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1230124231, now seen corresponding path program 36 times [2022-02-18 14:52:10,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:10,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153991958] [2022-02-18 14:52:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:10,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:10,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153991958] [2022-02-18 14:52:10,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153991958] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:10,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484030605] [2022-02-18 14:52:10,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:52:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:10,493 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:10,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-18 14:52:10,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-18 14:52:10,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:10,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:10,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:10,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:11,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484030605] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:11,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:11,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:52:11,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334394605] [2022-02-18 14:52:11,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:11,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:11,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:11,435 INFO L87 Difference]: Start difference. First operand 1908 states and 5453 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:14,737 INFO L93 Difference]: Finished difference Result 4001 states and 10852 transitions. [2022-02-18 14:52:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-18 14:52:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:14,744 INFO L225 Difference]: With dead ends: 4001 [2022-02-18 14:52:14,744 INFO L226 Difference]: Without dead ends: 3797 [2022-02-18 14:52:14,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-02-18 14:52:14,745 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1023 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:14,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 2493 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-02-18 14:52:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2128. [2022-02-18 14:52:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.8913963328631875) internal successors, (6150), 2127 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 6150 transitions. [2022-02-18 14:52:14,793 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 6150 transitions. Word has length 69 [2022-02-18 14:52:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:14,794 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 6150 transitions. [2022-02-18 14:52:14,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 6150 transitions. [2022-02-18 14:52:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:14,797 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:14,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:14,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:14,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-18 14:52:14,998 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1903997487, now seen corresponding path program 37 times [2022-02-18 14:52:14,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:14,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130477416] [2022-02-18 14:52:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:15,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:15,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130477416] [2022-02-18 14:52:15,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130477416] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:15,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442732942] [2022-02-18 14:52:15,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:52:15,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:15,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:15,208 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:15,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-18 14:52:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:15,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:15,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:15,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:16,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442732942] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:16,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:16,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:52:16,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907661927] [2022-02-18 14:52:16,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:16,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:16,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:16,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:16,098 INFO L87 Difference]: Start difference. First operand 2128 states and 6150 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:18,249 INFO L93 Difference]: Finished difference Result 3980 states and 11079 transitions. [2022-02-18 14:52:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-18 14:52:18,249 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:18,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:18,255 INFO L225 Difference]: With dead ends: 3980 [2022-02-18 14:52:18,256 INFO L226 Difference]: Without dead ends: 3701 [2022-02-18 14:52:18,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1114, Invalid=4738, Unknown=0, NotChecked=0, Total=5852 [2022-02-18 14:52:18,257 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 749 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:18,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2874 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2022-02-18 14:52:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2280. [2022-02-18 14:52:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2279 states have (on average 2.9258446687143485) internal successors, (6668), 2279 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 6668 transitions. [2022-02-18 14:52:18,304 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 6668 transitions. Word has length 69 [2022-02-18 14:52:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:18,304 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 6668 transitions. [2022-02-18 14:52:18,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 6668 transitions. [2022-02-18 14:52:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:18,309 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:18,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:18,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:18,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-18 14:52:18,527 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:18,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1018159229, now seen corresponding path program 38 times [2022-02-18 14:52:18,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:18,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724748034] [2022-02-18 14:52:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:18,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:18,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:18,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724748034] [2022-02-18 14:52:18,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724748034] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:18,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176014658] [2022-02-18 14:52:18,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:52:18,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:18,731 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:18,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-18 14:52:18,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:52:18,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:18,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:19,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:19,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176014658] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:19,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:19,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-02-18 14:52:19,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405837384] [2022-02-18 14:52:19,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:19,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-18 14:52:19,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-18 14:52:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:52:19,637 INFO L87 Difference]: Start difference. First operand 2280 states and 6668 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:22,183 INFO L93 Difference]: Finished difference Result 3893 states and 10806 transitions. [2022-02-18 14:52:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-18 14:52:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:22,189 INFO L225 Difference]: With dead ends: 3893 [2022-02-18 14:52:22,189 INFO L226 Difference]: Without dead ends: 3614 [2022-02-18 14:52:22,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1263, Invalid=5379, Unknown=0, NotChecked=0, Total=6642 [2022-02-18 14:52:22,190 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 834 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:22,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2684 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-02-18 14:52:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 2084. [2022-02-18 14:52:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 2.8886221795487277) internal successors, (6017), 2083 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 6017 transitions. [2022-02-18 14:52:22,241 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 6017 transitions. Word has length 69 [2022-02-18 14:52:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:22,241 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 6017 transitions. [2022-02-18 14:52:22,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 6017 transitions. [2022-02-18 14:52:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:22,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:22,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:22,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:22,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-02-18 14:52:22,445 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1255613195, now seen corresponding path program 39 times [2022-02-18 14:52:22,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:22,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971271053] [2022-02-18 14:52:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:22,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:22,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971271053] [2022-02-18 14:52:22,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971271053] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:22,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286088194] [2022-02-18 14:52:22,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:52:22,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:22,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:22,633 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:22,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-18 14:52:22,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:52:22,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:22,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:23,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:23,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286088194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:23,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:23,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:23,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777419705] [2022-02-18 14:52:23,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:23,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:23,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:23,401 INFO L87 Difference]: Start difference. First operand 2084 states and 6017 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:26,170 INFO L93 Difference]: Finished difference Result 3843 states and 10657 transitions. [2022-02-18 14:52:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-18 14:52:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:26,176 INFO L225 Difference]: With dead ends: 3843 [2022-02-18 14:52:26,176 INFO L226 Difference]: Without dead ends: 3741 [2022-02-18 14:52:26,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1683, Invalid=7247, Unknown=0, NotChecked=0, Total=8930 [2022-02-18 14:52:26,177 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 708 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:26,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 3251 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:52:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2022-02-18 14:52:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 2184. [2022-02-18 14:52:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.913421896472744) internal successors, (6360), 2183 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6360 transitions. [2022-02-18 14:52:26,238 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6360 transitions. Word has length 69 [2022-02-18 14:52:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:26,239 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6360 transitions. [2022-02-18 14:52:26,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6360 transitions. [2022-02-18 14:52:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:26,243 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:26,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:26,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:26,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-18 14:52:26,459 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash 581739939, now seen corresponding path program 40 times [2022-02-18 14:52:26,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:26,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353432987] [2022-02-18 14:52:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:26,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:26,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353432987] [2022-02-18 14:52:26,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353432987] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:26,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835558373] [2022-02-18 14:52:26,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:52:26,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:26,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:26,639 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:26,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-18 14:52:26,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:52:26,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:26,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:26,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:27,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:27,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835558373] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:27,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:27,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:27,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964965381] [2022-02-18 14:52:27,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:27,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:27,384 INFO L87 Difference]: Start difference. First operand 2184 states and 6360 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:29,934 INFO L93 Difference]: Finished difference Result 3751 states and 10350 transitions. [2022-02-18 14:52:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-18 14:52:29,935 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:29,940 INFO L225 Difference]: With dead ends: 3751 [2022-02-18 14:52:29,941 INFO L226 Difference]: Without dead ends: 3580 [2022-02-18 14:52:29,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1668, Invalid=7074, Unknown=0, NotChecked=0, Total=8742 [2022-02-18 14:52:29,943 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 980 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:29,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2326 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:52:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2022-02-18 14:52:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 2168. [2022-02-18 14:52:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 2.896169820027688) internal successors, (6276), 2167 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:29,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 6276 transitions. [2022-02-18 14:52:29,977 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 6276 transitions. Word has length 69 [2022-02-18 14:52:29,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:29,977 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 6276 transitions. [2022-02-18 14:52:29,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 6276 transitions. [2022-02-18 14:52:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:29,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:29,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:29,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:30,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-18 14:52:30,181 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1899223137, now seen corresponding path program 41 times [2022-02-18 14:52:30,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:30,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804188150] [2022-02-18 14:52:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:30,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:30,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804188150] [2022-02-18 14:52:30,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804188150] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:30,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656081255] [2022-02-18 14:52:30,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:52:30,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:30,382 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:30,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-18 14:52:30,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:52:30,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:30,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:30,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:30,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:31,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656081255] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:31,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:31,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:31,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762536035] [2022-02-18 14:52:31,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:31,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:31,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:31,127 INFO L87 Difference]: Start difference. First operand 2168 states and 6276 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:32,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:32,695 INFO L93 Difference]: Finished difference Result 3345 states and 9249 transitions. [2022-02-18 14:52:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-18 14:52:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:32,701 INFO L225 Difference]: With dead ends: 3345 [2022-02-18 14:52:32,701 INFO L226 Difference]: Without dead ends: 3138 [2022-02-18 14:52:32,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=931, Invalid=4769, Unknown=0, NotChecked=0, Total=5700 [2022-02-18 14:52:32,702 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 555 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:32,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 2469 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:52:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-02-18 14:52:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2113. [2022-02-18 14:52:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 2.882102272727273) internal successors, (6087), 2112 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 6087 transitions. [2022-02-18 14:52:32,767 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 6087 transitions. Word has length 69 [2022-02-18 14:52:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:32,767 INFO L470 AbstractCegarLoop]: Abstraction has 2113 states and 6087 transitions. [2022-02-18 14:52:32,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 6087 transitions. [2022-02-18 14:52:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:32,770 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:32,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:32,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:32,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:32,971 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash -555610421, now seen corresponding path program 42 times [2022-02-18 14:52:32,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:32,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972462815] [2022-02-18 14:52:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:33,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:33,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972462815] [2022-02-18 14:52:33,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972462815] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:33,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841340336] [2022-02-18 14:52:33,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:52:33,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:33,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:33,162 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:33,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-18 14:52:33,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:52:33,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:33,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:33,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:33,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:33,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841340336] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:33,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:33,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:33,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563472442] [2022-02-18 14:52:33,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:33,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:33,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:33,998 INFO L87 Difference]: Start difference. First operand 2113 states and 6087 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:37,357 INFO L93 Difference]: Finished difference Result 4562 states and 12684 transitions. [2022-02-18 14:52:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-18 14:52:37,357 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:37,364 INFO L225 Difference]: With dead ends: 4562 [2022-02-18 14:52:37,364 INFO L226 Difference]: Without dead ends: 4460 [2022-02-18 14:52:37,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1894, Invalid=9236, Unknown=0, NotChecked=0, Total=11130 [2022-02-18 14:52:37,365 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 850 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:37,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 2609 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:52:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-02-18 14:52:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 2153. [2022-02-18 14:52:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 2.8945167286245352) internal successors, (6229), 2152 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 6229 transitions. [2022-02-18 14:52:37,406 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 6229 transitions. Word has length 69 [2022-02-18 14:52:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:37,406 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 6229 transitions. [2022-02-18 14:52:37,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 6229 transitions. [2022-02-18 14:52:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:37,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:37,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:37,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:37,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:37,610 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1229483677, now seen corresponding path program 43 times [2022-02-18 14:52:37,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:37,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270681900] [2022-02-18 14:52:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:37,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:37,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270681900] [2022-02-18 14:52:37,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270681900] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:37,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910603787] [2022-02-18 14:52:37,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:52:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:37,811 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:37,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-18 14:52:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:37,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:37,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:38,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:38,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910603787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:38,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:38,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:38,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458775633] [2022-02-18 14:52:38,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:38,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:38,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:38,774 INFO L87 Difference]: Start difference. First operand 2153 states and 6229 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:41,348 INFO L93 Difference]: Finished difference Result 3918 states and 10968 transitions. [2022-02-18 14:52:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-18 14:52:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:41,354 INFO L225 Difference]: With dead ends: 3918 [2022-02-18 14:52:41,354 INFO L226 Difference]: Without dead ends: 3786 [2022-02-18 14:52:41,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1555, Invalid=7187, Unknown=0, NotChecked=0, Total=8742 [2022-02-18 14:52:41,355 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 652 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:41,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2699 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:52:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-02-18 14:52:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 2133. [2022-02-18 14:52:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 2.882739212007505) internal successors, (6146), 2132 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 6146 transitions. [2022-02-18 14:52:41,394 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 6146 transitions. Word has length 69 [2022-02-18 14:52:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 2133 states and 6146 transitions. [2022-02-18 14:52:41,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 6146 transitions. [2022-02-18 14:52:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:41,399 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:41,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:41,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:41,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-18 14:52:41,622 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1961445015, now seen corresponding path program 44 times [2022-02-18 14:52:41,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:41,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277117615] [2022-02-18 14:52:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:41,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:41,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277117615] [2022-02-18 14:52:41,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277117615] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:41,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944090184] [2022-02-18 14:52:41,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:52:41,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:41,812 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:41,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-18 14:52:41,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:52:41,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:41,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:41,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:42,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:42,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944090184] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:42,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:42,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:42,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843163311] [2022-02-18 14:52:42,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:42,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:42,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:42,688 INFO L87 Difference]: Start difference. First operand 2133 states and 6146 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:47,423 INFO L93 Difference]: Finished difference Result 4865 states and 13513 transitions. [2022-02-18 14:52:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-18 14:52:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:47,430 INFO L225 Difference]: With dead ends: 4865 [2022-02-18 14:52:47,431 INFO L226 Difference]: Without dead ends: 4712 [2022-02-18 14:52:47,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4604 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2220, Invalid=11120, Unknown=0, NotChecked=0, Total=13340 [2022-02-18 14:52:47,432 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 899 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:47,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 3166 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:52:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2022-02-18 14:52:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 2445. [2022-02-18 14:52:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 2444 states have (on average 2.911620294599018) internal successors, (7116), 2444 states have internal predecessors, (7116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 7116 transitions. [2022-02-18 14:52:47,484 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 7116 transitions. Word has length 69 [2022-02-18 14:52:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:47,484 INFO L470 AbstractCegarLoop]: Abstraction has 2445 states and 7116 transitions. [2022-02-18 14:52:47,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 7116 transitions. [2022-02-18 14:52:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-18 14:52:47,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:47,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:52:47,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:47,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-18 14:52:47,689 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:47,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1287571759, now seen corresponding path program 45 times [2022-02-18 14:52:47,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:47,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477968882] [2022-02-18 14:52:47,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:47,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:47,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:47,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477968882] [2022-02-18 14:52:47,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477968882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:47,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294840057] [2022-02-18 14:52:47,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:52:47,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:47,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:47,874 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:47,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-18 14:52:47,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-18 14:52:47,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:47,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:52:47,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:48,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:48,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294840057] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:48,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:48,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-02-18 14:52:48,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934348380] [2022-02-18 14:52:48,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:48,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-18 14:52:48,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-18 14:52:48,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-02-18 14:52:48,754 INFO L87 Difference]: Start difference. First operand 2445 states and 7116 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:51,056 INFO L93 Difference]: Finished difference Result 4139 states and 11689 transitions. [2022-02-18 14:52:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-18 14:52:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-02-18 14:52:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:51,063 INFO L225 Difference]: With dead ends: 4139 [2022-02-18 14:52:51,063 INFO L226 Difference]: Without dead ends: 3941 [2022-02-18 14:52:51,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1289, Invalid=5683, Unknown=0, NotChecked=0, Total=6972 [2022-02-18 14:52:51,064 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 858 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:51,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2332 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:52:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-02-18 14:52:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 2485. [2022-02-18 14:52:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 2.9041867954911433) internal successors, (7214), 2484 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 7214 transitions. [2022-02-18 14:52:51,104 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 7214 transitions. Word has length 69 [2022-02-18 14:52:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:51,104 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 7214 transitions. [2022-02-18 14:52:51,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 7214 transitions. [2022-02-18 14:52:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:52:51,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:51,108 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:52:51,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-18 14:52:51,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-18 14:52:51,309 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1319302325, now seen corresponding path program 46 times [2022-02-18 14:52:51,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:51,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349955457] [2022-02-18 14:52:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:51,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:51,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349955457] [2022-02-18 14:52:51,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349955457] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:51,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573460149] [2022-02-18 14:52:51,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:52:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:51,564 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:51,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-18 14:52:51,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:52:51,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:51,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:52:51,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:52,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:52,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573460149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:52,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:52,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:52:52,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119571594] [2022-02-18 14:52:52,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:52,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:52:52,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:52:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:52:52,832 INFO L87 Difference]: Start difference. First operand 2485 states and 7214 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:52:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:52:57,126 INFO L93 Difference]: Finished difference Result 5274 states and 14861 transitions. [2022-02-18 14:52:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-18 14:52:57,126 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:52:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:52:57,133 INFO L225 Difference]: With dead ends: 5274 [2022-02-18 14:52:57,134 INFO L226 Difference]: Without dead ends: 4920 [2022-02-18 14:52:57,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5834 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1835, Invalid=16255, Unknown=0, NotChecked=0, Total=18090 [2022-02-18 14:52:57,135 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1419 mSDsluCounter, 5558 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:52:57,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 5435 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-18 14:52:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2022-02-18 14:52:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 2796. [2022-02-18 14:52:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 2795 states have (on average 2.929159212880143) internal successors, (8187), 2795 states have internal predecessors, (8187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:52:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 8187 transitions. [2022-02-18 14:52:57,183 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 8187 transitions. Word has length 74 [2022-02-18 14:52:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:52:57,183 INFO L470 AbstractCegarLoop]: Abstraction has 2796 states and 8187 transitions. [2022-02-18 14:52:57,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:52:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 8187 transitions. [2022-02-18 14:52:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:52:57,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:52:57,188 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:52:57,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-02-18 14:52:57,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:57,388 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:52:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:52:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1906029941, now seen corresponding path program 47 times [2022-02-18 14:52:57,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:52:57,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109024693] [2022-02-18 14:52:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:52:57,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:52:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:52:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:57,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:52:57,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109024693] [2022-02-18 14:52:57,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109024693] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:52:57,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446060774] [2022-02-18 14:52:57,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:52:57,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:52:57,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:52:57,656 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:52:57,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-18 14:52:57,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:52:57,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:52:57,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:52:57,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:52:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:58,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:52:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:52:59,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446060774] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:52:59,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:52:59,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:52:59,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126999032] [2022-02-18 14:52:59,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:52:59,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:52:59,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:52:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:52:59,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:52:59,035 INFO L87 Difference]: Start difference. First operand 2796 states and 8187 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:03,444 INFO L93 Difference]: Finished difference Result 5568 states and 15569 transitions. [2022-02-18 14:53:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-18 14:53:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:53:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:03,453 INFO L225 Difference]: With dead ends: 5568 [2022-02-18 14:53:03,453 INFO L226 Difference]: Without dead ends: 5466 [2022-02-18 14:53:03,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4992 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1621, Invalid=14129, Unknown=0, NotChecked=0, Total=15750 [2022-02-18 14:53:03,454 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1472 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:03,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 4809 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-18 14:53:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2022-02-18 14:53:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 2896. [2022-02-18 14:53:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2895 states have (on average 2.9409326424870468) internal successors, (8514), 2895 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 8514 transitions. [2022-02-18 14:53:03,508 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 8514 transitions. Word has length 74 [2022-02-18 14:53:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:03,508 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 8514 transitions. [2022-02-18 14:53:03,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 8514 transitions. [2022-02-18 14:53:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:03,512 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:03,512 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:03,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-18 14:53:03,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-18 14:53:03,713 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:03,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1715064099, now seen corresponding path program 48 times [2022-02-18 14:53:03,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:03,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352249344] [2022-02-18 14:53:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:03,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:03,948 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:03,948 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352249344] [2022-02-18 14:53:03,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352249344] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:03,949 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125880532] [2022-02-18 14:53:03,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:53:03,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:03,950 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:03,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-18 14:53:04,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:53:04,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:04,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:04,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:04,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:05,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125880532] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:05,260 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:05,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:05,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959848333] [2022-02-18 14:53:05,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:05,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:05,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:05,261 INFO L87 Difference]: Start difference. First operand 2896 states and 8514 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:10,142 INFO L93 Difference]: Finished difference Result 5080 states and 14216 transitions. [2022-02-18 14:53:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-18 14:53:10,143 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:53:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:10,150 INFO L225 Difference]: With dead ends: 5080 [2022-02-18 14:53:10,150 INFO L226 Difference]: Without dead ends: 4912 [2022-02-18 14:53:10,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5624 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1764, Invalid=15528, Unknown=0, NotChecked=0, Total=17292 [2022-02-18 14:53:10,152 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1331 mSDsluCounter, 5991 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 5894 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:10,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 5894 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:53:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2022-02-18 14:53:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 2864. [2022-02-18 14:53:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 2.9332867621376177) internal successors, (8398), 2863 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 8398 transitions. [2022-02-18 14:53:10,201 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 8398 transitions. Word has length 74 [2022-02-18 14:53:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:10,201 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 8398 transitions. [2022-02-18 14:53:10,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 8398 transitions. [2022-02-18 14:53:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:10,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:10,206 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:10,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-18 14:53:10,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:10,406 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -69525451, now seen corresponding path program 49 times [2022-02-18 14:53:10,407 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:10,407 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191750165] [2022-02-18 14:53:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:10,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:10,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191750165] [2022-02-18 14:53:10,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191750165] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:10,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402356780] [2022-02-18 14:53:10,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:53:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:10,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:10,657 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:10,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-18 14:53:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:10,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:10,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:11,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:11,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402356780] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:11,971 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:11,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:11,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711358659] [2022-02-18 14:53:11,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:11,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:11,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:11,972 INFO L87 Difference]: Start difference. First operand 2864 states and 8398 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:17,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:17,058 INFO L93 Difference]: Finished difference Result 6011 states and 16769 transitions. [2022-02-18 14:53:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-18 14:53:17,059 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:53:17,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:17,068 INFO L225 Difference]: With dead ends: 6011 [2022-02-18 14:53:17,068 INFO L226 Difference]: Without dead ends: 5858 [2022-02-18 14:53:17,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6417 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2075, Invalid=17107, Unknown=0, NotChecked=0, Total=19182 [2022-02-18 14:53:17,080 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1565 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 5145 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:17,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 5145 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 14:53:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5858 states. [2022-02-18 14:53:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5858 to 3012. [2022-02-18 14:53:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 2.948189970109598) internal successors, (8877), 3011 states have internal predecessors, (8877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 8877 transitions. [2022-02-18 14:53:17,137 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 8877 transitions. Word has length 74 [2022-02-18 14:53:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:17,137 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 8877 transitions. [2022-02-18 14:53:17,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 8877 transitions. [2022-02-18 14:53:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:17,141 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:17,141 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:17,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:17,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-18 14:53:17,342 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash -743398707, now seen corresponding path program 50 times [2022-02-18 14:53:17,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:17,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340629126] [2022-02-18 14:53:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:17,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:17,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340629126] [2022-02-18 14:53:17,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340629126] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:17,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096820177] [2022-02-18 14:53:17,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:53:17,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:17,597 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:17,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-18 14:53:17,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:53:17,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:17,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:17,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:18,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:18,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096820177] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:18,972 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:18,972 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:18,972 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181697930] [2022-02-18 14:53:18,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:18,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:18,973 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:18,973 INFO L87 Difference]: Start difference. First operand 3012 states and 8877 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:24,775 INFO L93 Difference]: Finished difference Result 5413 states and 15179 transitions. [2022-02-18 14:53:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-18 14:53:24,775 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:53:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:24,782 INFO L225 Difference]: With dead ends: 5413 [2022-02-18 14:53:24,783 INFO L226 Difference]: Without dead ends: 5179 [2022-02-18 14:53:24,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7768 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2381, Invalid=19969, Unknown=0, NotChecked=0, Total=22350 [2022-02-18 14:53:24,784 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1402 mSDsluCounter, 6020 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 5912 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:24,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 5912 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:53:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2022-02-18 14:53:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 2892. [2022-02-18 14:53:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2891 states have (on average 2.9356624005534417) internal successors, (8487), 2891 states have internal predecessors, (8487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 8487 transitions. [2022-02-18 14:53:24,830 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 8487 transitions. Word has length 74 [2022-02-18 14:53:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:24,830 INFO L470 AbstractCegarLoop]: Abstraction has 2892 states and 8487 transitions. [2022-02-18 14:53:24,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 8487 transitions. [2022-02-18 14:53:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:24,834 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:24,834 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:24,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:25,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-18 14:53:25,035 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:25,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1084664455, now seen corresponding path program 51 times [2022-02-18 14:53:25,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:25,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906731022] [2022-02-18 14:53:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:25,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:25,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906731022] [2022-02-18 14:53:25,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906731022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:25,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263016155] [2022-02-18 14:53:25,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:53:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:25,300 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:25,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-18 14:53:25,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:53:25,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:25,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:25,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:25,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:26,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263016155] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:26,515 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:26,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:26,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281884571] [2022-02-18 14:53:26,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:26,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:26,517 INFO L87 Difference]: Start difference. First operand 2892 states and 8487 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:28,405 INFO L93 Difference]: Finished difference Result 4228 states and 12033 transitions. [2022-02-18 14:53:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-18 14:53:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:53:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:28,413 INFO L225 Difference]: With dead ends: 4228 [2022-02-18 14:53:28,413 INFO L226 Difference]: Without dead ends: 4126 [2022-02-18 14:53:28,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=873, Invalid=6609, Unknown=0, NotChecked=0, Total=7482 [2022-02-18 14:53:28,414 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 1009 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:28,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 2673 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:53:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2022-02-18 14:53:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3090. [2022-02-18 14:53:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 3089 states have (on average 2.9494982194885075) internal successors, (9111), 3089 states have internal predecessors, (9111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 9111 transitions. [2022-02-18 14:53:28,463 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 9111 transitions. Word has length 74 [2022-02-18 14:53:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:28,464 INFO L470 AbstractCegarLoop]: Abstraction has 3090 states and 9111 transitions. [2022-02-18 14:53:28,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 9111 transitions. [2022-02-18 14:53:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:28,468 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:28,468 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:28,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:28,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:28,669 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash 440163693, now seen corresponding path program 52 times [2022-02-18 14:53:28,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:28,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280814376] [2022-02-18 14:53:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:28,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:28,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280814376] [2022-02-18 14:53:28,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280814376] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:28,894 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446543948] [2022-02-18 14:53:28,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:53:28,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:28,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:28,900 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:28,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-18 14:53:28,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:53:28,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:28,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:29,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:30,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446543948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:30,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:30,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:30,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135314099] [2022-02-18 14:53:30,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:30,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:30,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:30,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:30,044 INFO L87 Difference]: Start difference. First operand 3090 states and 9111 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:35,960 INFO L93 Difference]: Finished difference Result 6445 states and 17787 transitions. [2022-02-18 14:53:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-18 14:53:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:53:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:35,970 INFO L225 Difference]: With dead ends: 6445 [2022-02-18 14:53:35,970 INFO L226 Difference]: Without dead ends: 6241 [2022-02-18 14:53:35,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10039 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3586, Invalid=24806, Unknown=0, NotChecked=0, Total=28392 [2022-02-18 14:53:35,972 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 2052 mSDsluCounter, 6342 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 6282 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:35,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 6282 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 14:53:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-02-18 14:53:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3246. [2022-02-18 14:53:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3245 states have (on average 2.9781201848998458) internal successors, (9664), 3245 states have internal predecessors, (9664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 9664 transitions. [2022-02-18 14:53:36,054 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 9664 transitions. Word has length 74 [2022-02-18 14:53:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:36,054 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 9664 transitions. [2022-02-18 14:53:36,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 9664 transitions. [2022-02-18 14:53:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:36,059 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:36,059 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:36,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-02-18 14:53:36,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-18 14:53:36,260 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash -233709563, now seen corresponding path program 53 times [2022-02-18 14:53:36,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:36,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716064599] [2022-02-18 14:53:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:36,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:36,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:36,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716064599] [2022-02-18 14:53:36,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716064599] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:36,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945645507] [2022-02-18 14:53:36,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:53:36,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:36,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:36,500 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:36,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-18 14:53:36,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:53:36,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:36,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:36,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:37,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:37,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945645507] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:37,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:37,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:37,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102165874] [2022-02-18 14:53:37,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:37,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:37,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:37,617 INFO L87 Difference]: Start difference. First operand 3246 states and 9664 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:41,661 INFO L93 Difference]: Finished difference Result 5507 states and 15504 transitions. [2022-02-18 14:53:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-18 14:53:41,661 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:53:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:41,669 INFO L225 Difference]: With dead ends: 5507 [2022-02-18 14:53:41,669 INFO L226 Difference]: Without dead ends: 5147 [2022-02-18 14:53:41,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6105 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2686, Invalid=15674, Unknown=0, NotChecked=0, Total=18360 [2022-02-18 14:53:41,671 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1526 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:41,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 4101 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 14:53:41,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2022-02-18 14:53:41,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 3221. [2022-02-18 14:53:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3220 states have (on average 2.966770186335404) internal successors, (9553), 3220 states have internal predecessors, (9553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 9553 transitions. [2022-02-18 14:53:41,732 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 9553 transitions. Word has length 74 [2022-02-18 14:53:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:41,732 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 9553 transitions. [2022-02-18 14:53:41,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 9553 transitions. [2022-02-18 14:53:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:41,737 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:41,737 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:41,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:41,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-18 14:53:41,938 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 126938247, now seen corresponding path program 54 times [2022-02-18 14:53:41,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:41,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130359794] [2022-02-18 14:53:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:42,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:42,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130359794] [2022-02-18 14:53:42,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130359794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:42,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576601817] [2022-02-18 14:53:42,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:53:42,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:42,170 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:42,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-18 14:53:42,243 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:53:42,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:42,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:42,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:42,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:43,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576601817] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:43,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:43,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:43,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089180255] [2022-02-18 14:53:43,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:43,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:43,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:43,532 INFO L87 Difference]: Start difference. First operand 3221 states and 9553 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:49,863 INFO L93 Difference]: Finished difference Result 6719 states and 18885 transitions. [2022-02-18 14:53:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-18 14:53:49,864 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:53:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:49,874 INFO L225 Difference]: With dead ends: 6719 [2022-02-18 14:53:49,874 INFO L226 Difference]: Without dead ends: 6566 [2022-02-18 14:53:49,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7810 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2198, Invalid=20452, Unknown=0, NotChecked=0, Total=22650 [2022-02-18 14:53:49,875 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1402 mSDsluCounter, 5473 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:49,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 5456 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-18 14:53:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2022-02-18 14:53:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 3397. [2022-02-18 14:53:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 2.989693757361602) internal successors, (10153), 3396 states have internal predecessors, (10153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 10153 transitions. [2022-02-18 14:53:49,940 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 10153 transitions. Word has length 74 [2022-02-18 14:53:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:49,941 INFO L470 AbstractCegarLoop]: Abstraction has 3397 states and 10153 transitions. [2022-02-18 14:53:49,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 10153 transitions. [2022-02-18 14:53:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:49,946 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:49,946 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:49,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:50,146 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash -546935009, now seen corresponding path program 55 times [2022-02-18 14:53:50,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:50,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196146489] [2022-02-18 14:53:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:50,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:50,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196146489] [2022-02-18 14:53:50,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196146489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:50,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208968450] [2022-02-18 14:53:50,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:53:50,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:50,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:50,406 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:50,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-18 14:53:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:50,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:50,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:51,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:51,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208968450] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:51,854 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:51,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:51,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560906383] [2022-02-18 14:53:51,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:51,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:51,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1450, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:51,855 INFO L87 Difference]: Start difference. First operand 3397 states and 10153 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:53:57,820 INFO L93 Difference]: Finished difference Result 6005 states and 16919 transitions. [2022-02-18 14:53:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-18 14:53:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:53:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:53:57,830 INFO L225 Difference]: With dead ends: 6005 [2022-02-18 14:53:57,830 INFO L226 Difference]: Without dead ends: 5762 [2022-02-18 14:53:57,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8101 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2207, Invalid=21049, Unknown=0, NotChecked=0, Total=23256 [2022-02-18 14:53:57,831 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1517 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:53:57,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 4939 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:53:57,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2022-02-18 14:53:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 3365. [2022-02-18 14:53:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3364 states have (on average 2.977705112960761) internal successors, (10017), 3364 states have internal predecessors, (10017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:53:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 10017 transitions. [2022-02-18 14:53:57,895 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 10017 transitions. Word has length 74 [2022-02-18 14:53:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:53:57,896 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 10017 transitions. [2022-02-18 14:53:57,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:53:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 10017 transitions. [2022-02-18 14:53:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:53:57,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:53:57,901 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:53:57,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-18 14:53:58,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:58,102 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:53:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:53:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1507884503, now seen corresponding path program 56 times [2022-02-18 14:53:58,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:53:58,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414878889] [2022-02-18 14:53:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:53:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:53:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:53:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:58,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:53:58,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414878889] [2022-02-18 14:53:58,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414878889] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:53:58,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186140046] [2022-02-18 14:53:58,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:53:58,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:53:58,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:53:58,341 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:53:58,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-18 14:53:58,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:53:58,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:53:58,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:53:58,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:53:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:58,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:53:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:53:59,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186140046] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:53:59,714 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:53:59,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:53:59,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23239471] [2022-02-18 14:53:59,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:53:59,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:53:59,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:53:59,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:53:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:53:59,715 INFO L87 Difference]: Start difference. First operand 3365 states and 10017 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:05,080 INFO L93 Difference]: Finished difference Result 6318 states and 17865 transitions. [2022-02-18 14:54:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-02-18 14:54:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:54:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:05,091 INFO L225 Difference]: With dead ends: 6318 [2022-02-18 14:54:05,091 INFO L226 Difference]: Without dead ends: 6165 [2022-02-18 14:54:05,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5970 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1786, Invalid=16304, Unknown=0, NotChecked=0, Total=18090 [2022-02-18 14:54:05,093 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 1066 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 6998 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:05,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 6998 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:54:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6165 states. [2022-02-18 14:54:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6165 to 3465. [2022-02-18 14:54:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3465 states, 3464 states have (on average 2.9988452655889146) internal successors, (10388), 3464 states have internal predecessors, (10388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 10388 transitions. [2022-02-18 14:54:05,179 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 10388 transitions. Word has length 74 [2022-02-18 14:54:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:05,179 INFO L470 AbstractCegarLoop]: Abstraction has 3465 states and 10388 transitions. [2022-02-18 14:54:05,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 10388 transitions. [2022-02-18 14:54:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:05,185 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:05,185 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:05,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:05,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:05,386 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2113209537, now seen corresponding path program 57 times [2022-02-18 14:54:05,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:05,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264888436] [2022-02-18 14:54:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:05,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:05,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264888436] [2022-02-18 14:54:05,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264888436] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:05,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904932108] [2022-02-18 14:54:05,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:54:05,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:05,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:05,633 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:05,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-18 14:54:05,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:54:05,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:05,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:05,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:06,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:07,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904932108] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:07,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:07,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:07,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591310801] [2022-02-18 14:54:07,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:07,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:07,039 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:07,039 INFO L87 Difference]: Start difference. First operand 3465 states and 10388 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:54:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:11,629 INFO L93 Difference]: Finished difference Result 5684 states and 16183 transitions. [2022-02-18 14:54:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-18 14:54:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:54:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:11,638 INFO L225 Difference]: With dead ends: 5684 [2022-02-18 14:54:11,638 INFO L226 Difference]: Without dead ends: 5441 [2022-02-18 14:54:11,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5355 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1628, Invalid=14884, Unknown=0, NotChecked=0, Total=16512 [2022-02-18 14:54:11,640 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1025 mSDsluCounter, 6165 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:11,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 6123 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-18 14:54:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2022-02-18 14:54:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 3401. [2022-02-18 14:54:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 3400 states have (on average 2.981176470588235) internal successors, (10136), 3400 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 10136 transitions. [2022-02-18 14:54:11,721 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 10136 transitions. Word has length 74 [2022-02-18 14:54:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:11,721 INFO L470 AbstractCegarLoop]: Abstraction has 3401 states and 10136 transitions. [2022-02-18 14:54:11,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:54:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 10136 transitions. [2022-02-18 14:54:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:11,727 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:11,727 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:11,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:11,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-18 14:54:11,943 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1327806731, now seen corresponding path program 58 times [2022-02-18 14:54:11,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:11,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057180364] [2022-02-18 14:54:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:12,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:12,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057180364] [2022-02-18 14:54:12,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057180364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:12,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894759819] [2022-02-18 14:54:12,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:54:12,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:12,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:12,169 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:12,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-18 14:54:12,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:54:12,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:12,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:12,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:12,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:13,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894759819] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:13,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:13,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:13,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053209096] [2022-02-18 14:54:13,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:13,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:13,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:13,456 INFO L87 Difference]: Start difference. First operand 3401 states and 10136 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:54:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:19,147 INFO L93 Difference]: Finished difference Result 6166 states and 17524 transitions. [2022-02-18 14:54:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-18 14:54:19,147 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:54:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:19,157 INFO L225 Difference]: With dead ends: 6166 [2022-02-18 14:54:19,157 INFO L226 Difference]: Without dead ends: 5953 [2022-02-18 14:54:19,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7977 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2229, Invalid=21027, Unknown=0, NotChecked=0, Total=23256 [2022-02-18 14:54:19,158 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1150 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 5053 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:19,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 5053 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 14:54:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2022-02-18 14:54:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 3585. [2022-02-18 14:54:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.9815848214285716) internal successors, (10686), 3584 states have internal predecessors, (10686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10686 transitions. [2022-02-18 14:54:19,223 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10686 transitions. Word has length 74 [2022-02-18 14:54:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:19,223 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10686 transitions. [2022-02-18 14:54:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:54:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10686 transitions. [2022-02-18 14:54:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:19,228 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:19,228 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:19,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:19,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-02-18 14:54:19,429 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:19,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash -485881909, now seen corresponding path program 59 times [2022-02-18 14:54:19,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:19,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623117721] [2022-02-18 14:54:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:19,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:19,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623117721] [2022-02-18 14:54:19,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623117721] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:19,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390252858] [2022-02-18 14:54:19,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:54:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:19,694 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:19,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-18 14:54:19,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:54:19,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:19,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:19,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:20,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:21,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390252858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:21,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:21,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:21,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459918642] [2022-02-18 14:54:21,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:21,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:21,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:21,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:21,067 INFO L87 Difference]: Start difference. First operand 3585 states and 10686 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:27,409 INFO L93 Difference]: Finished difference Result 7074 states and 20143 transitions. [2022-02-18 14:54:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-18 14:54:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:54:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:27,421 INFO L225 Difference]: With dead ends: 7074 [2022-02-18 14:54:27,422 INFO L226 Difference]: Without dead ends: 6921 [2022-02-18 14:54:27,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8503 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2703, Invalid=21477, Unknown=0, NotChecked=0, Total=24180 [2022-02-18 14:54:27,423 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1146 mSDsluCounter, 7164 mSDsCounter, 0 mSdLazyCounter, 3642 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 7146 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:27,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 7146 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3642 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:54:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2022-02-18 14:54:27,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 3673. [2022-02-18 14:54:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 3672 states have (on average 2.9891067538126364) internal successors, (10976), 3672 states have internal predecessors, (10976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 10976 transitions. [2022-02-18 14:54:27,526 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 10976 transitions. Word has length 74 [2022-02-18 14:54:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 3673 states and 10976 transitions. [2022-02-18 14:54:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 10976 transitions. [2022-02-18 14:54:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:27,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:27,533 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:27,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:27,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-18 14:54:27,757 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:27,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1159755165, now seen corresponding path program 60 times [2022-02-18 14:54:27,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:27,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144515185] [2022-02-18 14:54:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:27,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:27,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144515185] [2022-02-18 14:54:27,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144515185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:27,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232278783] [2022-02-18 14:54:27,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:54:27,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:27,982 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:27,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-18 14:54:28,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:54:28,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:28,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:28,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:28,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:29,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232278783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:29,323 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:29,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:29,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902483131] [2022-02-18 14:54:29,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:29,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:29,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:29,324 INFO L87 Difference]: Start difference. First operand 3673 states and 10976 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:54:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:36,039 INFO L93 Difference]: Finished difference Result 6595 states and 18831 transitions. [2022-02-18 14:54:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-18 14:54:36,039 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:54:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:36,051 INFO L225 Difference]: With dead ends: 6595 [2022-02-18 14:54:36,051 INFO L226 Difference]: Without dead ends: 6397 [2022-02-18 14:54:36,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9186 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2527, Invalid=23233, Unknown=0, NotChecked=0, Total=25760 [2022-02-18 14:54:36,053 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1128 mSDsluCounter, 6646 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:36,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 6625 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 14:54:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-02-18 14:54:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 3669. [2022-02-18 14:54:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 3668 states have (on average 2.9850054525627043) internal successors, (10949), 3668 states have internal predecessors, (10949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 10949 transitions. [2022-02-18 14:54:36,124 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 10949 transitions. Word has length 74 [2022-02-18 14:54:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:36,124 INFO L470 AbstractCegarLoop]: Abstraction has 3669 states and 10949 transitions. [2022-02-18 14:54:36,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:54:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 10949 transitions. [2022-02-18 14:54:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:36,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:36,130 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:36,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-18 14:54:36,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:36,331 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:36,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash -410298985, now seen corresponding path program 61 times [2022-02-18 14:54:36,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:36,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776704920] [2022-02-18 14:54:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:36,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:36,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776704920] [2022-02-18 14:54:36,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776704920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:36,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806345457] [2022-02-18 14:54:36,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:54:36,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:36,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:36,596 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:36,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-18 14:54:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:36,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:36,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:37,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:37,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806345457] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:37,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:37,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:54:37,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463757999] [2022-02-18 14:54:37,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:37,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:54:37,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:54:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:54:37,716 INFO L87 Difference]: Start difference. First operand 3669 states and 10949 transitions. Second operand has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 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) [2022-02-18 14:54:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:40,149 INFO L93 Difference]: Finished difference Result 5647 states and 16189 transitions. [2022-02-18 14:54:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-18 14:54:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 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 74 [2022-02-18 14:54:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:40,159 INFO L225 Difference]: With dead ends: 5647 [2022-02-18 14:54:40,159 INFO L226 Difference]: Without dead ends: 5545 [2022-02-18 14:54:40,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1246, Invalid=9056, Unknown=0, NotChecked=0, Total=10302 [2022-02-18 14:54:40,160 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 853 mSDsluCounter, 3941 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3942 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:40,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3942 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:54:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-02-18 14:54:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 3825. [2022-02-18 14:54:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3824 states have (on average 2.9973849372384938) internal successors, (11462), 3824 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 11462 transitions. [2022-02-18 14:54:40,230 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 11462 transitions. Word has length 74 [2022-02-18 14:54:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:40,231 INFO L470 AbstractCegarLoop]: Abstraction has 3825 states and 11462 transitions. [2022-02-18 14:54:40,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 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) [2022-02-18 14:54:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 11462 transitions. [2022-02-18 14:54:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:40,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:40,237 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:40,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:40,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:40,438 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash -389581599, now seen corresponding path program 62 times [2022-02-18 14:54:40,438 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:40,438 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695642724] [2022-02-18 14:54:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:40,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:40,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695642724] [2022-02-18 14:54:40,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695642724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:40,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449264726] [2022-02-18 14:54:40,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:54:40,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:40,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:40,635 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:40,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-18 14:54:40,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:54:40,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:40,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:40,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:41,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:41,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449264726] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:41,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:41,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:41,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306686437] [2022-02-18 14:54:41,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:41,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:41,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:41,836 INFO L87 Difference]: Start difference. First operand 3825 states and 11462 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:44,862 INFO L93 Difference]: Finished difference Result 5455 states and 15725 transitions. [2022-02-18 14:54:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-18 14:54:44,862 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:54:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:44,871 INFO L225 Difference]: With dead ends: 5455 [2022-02-18 14:54:44,871 INFO L226 Difference]: Without dead ends: 5353 [2022-02-18 14:54:44,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2678 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1115, Invalid=7815, Unknown=0, NotChecked=0, Total=8930 [2022-02-18 14:54:44,873 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 874 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:44,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 4228 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:54:44,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-02-18 14:54:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3853. [2022-02-18 14:54:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3852 states have (on average 2.9976635514018692) internal successors, (11547), 3852 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 11547 transitions. [2022-02-18 14:54:44,942 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 11547 transitions. Word has length 74 [2022-02-18 14:54:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:44,942 INFO L470 AbstractCegarLoop]: Abstraction has 3853 states and 11547 transitions. [2022-02-18 14:54:44,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 11547 transitions. [2022-02-18 14:54:44,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:44,947 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:44,947 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:44,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-18 14:54:45,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-18 14:54:45,148 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1034082361, now seen corresponding path program 63 times [2022-02-18 14:54:45,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:45,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371048044] [2022-02-18 14:54:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:45,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:45,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371048044] [2022-02-18 14:54:45,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371048044] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:45,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093354058] [2022-02-18 14:54:45,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:54:45,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:45,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:45,409 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:45,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-18 14:54:45,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:54:45,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:45,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:45,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:46,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:46,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093354058] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:46,621 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:46,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:46,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12993786] [2022-02-18 14:54:46,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:46,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:46,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:46,622 INFO L87 Difference]: Start difference. First operand 3853 states and 11547 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:54:55,056 INFO L93 Difference]: Finished difference Result 8370 states and 23518 transitions. [2022-02-18 14:54:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-02-18 14:54:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:54:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:54:55,071 INFO L225 Difference]: With dead ends: 8370 [2022-02-18 14:54:55,071 INFO L226 Difference]: Without dead ends: 8136 [2022-02-18 14:54:55,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16880 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=5486, Invalid=38404, Unknown=0, NotChecked=0, Total=43890 [2022-02-18 14:54:55,074 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1992 mSDsluCounter, 6985 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 6964 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:54:55,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 6964 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:54:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2022-02-18 14:54:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 4121. [2022-02-18 14:54:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4121 states, 4120 states have (on average 3.013592233009709) internal successors, (12416), 4120 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 12416 transitions. [2022-02-18 14:54:55,182 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 12416 transitions. Word has length 74 [2022-02-18 14:54:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:54:55,182 INFO L470 AbstractCegarLoop]: Abstraction has 4121 states and 12416 transitions. [2022-02-18 14:54:55,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:54:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 12416 transitions. [2022-02-18 14:54:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:54:55,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:54:55,189 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:54:55,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-18 14:54:55,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-18 14:54:55,390 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:54:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:54:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1509045113, now seen corresponding path program 64 times [2022-02-18 14:54:55,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:54:55,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682054850] [2022-02-18 14:54:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:54:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:54:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:54:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:55,614 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:54:55,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682054850] [2022-02-18 14:54:55,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682054850] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:54:55,614 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658845829] [2022-02-18 14:54:55,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:54:55,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:54:55,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:54:55,615 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:54:55,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-18 14:54:55,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:54:55,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:54:55,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:54:55,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:54:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:56,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:54:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:54:56,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658845829] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:54:56,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:54:56,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:54:56,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850750427] [2022-02-18 14:54:56,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:54:56,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:54:56,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:54:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:54:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:54:56,922 INFO L87 Difference]: Start difference. First operand 4121 states and 12416 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:04,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:04,447 INFO L93 Difference]: Finished difference Result 8546 states and 24271 transitions. [2022-02-18 14:55:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-18 14:55:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:55:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:04,461 INFO L225 Difference]: With dead ends: 8546 [2022-02-18 14:55:04,462 INFO L226 Difference]: Without dead ends: 8261 [2022-02-18 14:55:04,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12173 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2808, Invalid=30498, Unknown=0, NotChecked=0, Total=33306 [2022-02-18 14:55:04,463 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1511 mSDsluCounter, 6927 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 6916 SdHoareTripleChecker+Invalid, 3650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:04,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 6916 Invalid, 3650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:55:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-02-18 14:55:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 4401. [2022-02-18 14:55:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4400 states have (on average 3.0322727272727272) internal successors, (13342), 4400 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 13342 transitions. [2022-02-18 14:55:04,549 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 13342 transitions. Word has length 74 [2022-02-18 14:55:04,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:04,550 INFO L470 AbstractCegarLoop]: Abstraction has 4401 states and 13342 transitions. [2022-02-18 14:55:04,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 13342 transitions. [2022-02-18 14:55:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:04,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:04,556 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:04,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-18 14:55:04,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:04,757 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash 835171857, now seen corresponding path program 65 times [2022-02-18 14:55:04,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:04,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725704146] [2022-02-18 14:55:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:04,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:04,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725704146] [2022-02-18 14:55:04,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725704146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:04,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300568161] [2022-02-18 14:55:04,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:55:04,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:04,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:04,975 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:04,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-18 14:55:05,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:55:05,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:05,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:05,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:05,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:06,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300568161] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:06,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:06,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:55:06,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930680020] [2022-02-18 14:55:06,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:06,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:55:06,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:55:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:55:06,360 INFO L87 Difference]: Start difference. First operand 4401 states and 13342 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:13,649 INFO L93 Difference]: Finished difference Result 7638 states and 21892 transitions. [2022-02-18 14:55:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-18 14:55:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:55:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:13,661 INFO L225 Difference]: With dead ends: 7638 [2022-02-18 14:55:13,662 INFO L226 Difference]: Without dead ends: 7227 [2022-02-18 14:55:13,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9807 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2682, Invalid=25040, Unknown=0, NotChecked=0, Total=27722 [2022-02-18 14:55:13,663 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1298 mSDsluCounter, 7232 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 7179 SdHoareTripleChecker+Invalid, 3954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:13,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 7179 Invalid, 3954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-18 14:55:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2022-02-18 14:55:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 4649. [2022-02-18 14:55:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4648 states have (on average 3.0395869191049916) internal successors, (14128), 4648 states have internal predecessors, (14128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 14128 transitions. [2022-02-18 14:55:13,744 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 14128 transitions. Word has length 74 [2022-02-18 14:55:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:13,744 INFO L470 AbstractCegarLoop]: Abstraction has 4649 states and 14128 transitions. [2022-02-18 14:55:13,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 14128 transitions. [2022-02-18 14:55:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:13,751 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:13,751 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:13,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:13,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-18 14:55:13,952 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash -125777637, now seen corresponding path program 66 times [2022-02-18 14:55:13,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:13,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447384983] [2022-02-18 14:55:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:14,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:14,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447384983] [2022-02-18 14:55:14,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447384983] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:14,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930073109] [2022-02-18 14:55:14,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:55:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:14,190 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:14,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-18 14:55:14,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:55:14,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:14,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:14,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:15,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930073109] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:15,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:15,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:55:15,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865336559] [2022-02-18 14:55:15,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:15,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:55:15,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:15,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:55:15,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:55:15,573 INFO L87 Difference]: Start difference. First operand 4649 states and 14128 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:24,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:24,805 INFO L93 Difference]: Finished difference Result 9639 states and 27462 transitions. [2022-02-18 14:55:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-18 14:55:24,805 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:55:24,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:24,822 INFO L225 Difference]: With dead ends: 9639 [2022-02-18 14:55:24,822 INFO L226 Difference]: Without dead ends: 9426 [2022-02-18 14:55:24,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15082 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3428, Invalid=36772, Unknown=0, NotChecked=0, Total=40200 [2022-02-18 14:55:24,824 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1823 mSDsluCounter, 7653 mSDsCounter, 0 mSdLazyCounter, 3724 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 7536 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:24,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 7536 Invalid, 3979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3724 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-18 14:55:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2022-02-18 14:55:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 4912. [2022-02-18 14:55:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4911 states have (on average 3.058440236204439) internal successors, (15020), 4911 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 15020 transitions. [2022-02-18 14:55:24,945 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 15020 transitions. Word has length 74 [2022-02-18 14:55:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:24,945 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 15020 transitions. [2022-02-18 14:55:24,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 15020 transitions. [2022-02-18 14:55:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:24,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:24,952 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:24,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:25,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-18 14:55:25,153 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -799650893, now seen corresponding path program 67 times [2022-02-18 14:55:25,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:25,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799567244] [2022-02-18 14:55:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:25,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:25,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799567244] [2022-02-18 14:55:25,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799567244] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:25,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585657410] [2022-02-18 14:55:25,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:55:25,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:25,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:25,391 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:25,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-18 14:55:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:25,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:25,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:26,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585657410] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:26,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:26,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:55:26,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925309769] [2022-02-18 14:55:26,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:26,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:55:26,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:55:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:55:26,644 INFO L87 Difference]: Start difference. First operand 4912 states and 15020 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:32,886 INFO L93 Difference]: Finished difference Result 8084 states and 23396 transitions. [2022-02-18 14:55:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-02-18 14:55:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:55:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:32,900 INFO L225 Difference]: With dead ends: 8084 [2022-02-18 14:55:32,900 INFO L226 Difference]: Without dead ends: 7760 [2022-02-18 14:55:32,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9845 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2738, Invalid=25318, Unknown=0, NotChecked=0, Total=28056 [2022-02-18 14:55:32,902 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1633 mSDsluCounter, 5800 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:32,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 5794 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 3054 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 14:55:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2022-02-18 14:55:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 4936. [2022-02-18 14:55:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 4935 states have (on average 3.059371833839919) internal successors, (15098), 4935 states have internal predecessors, (15098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 15098 transitions. [2022-02-18 14:55:32,994 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 15098 transitions. Word has length 74 [2022-02-18 14:55:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:32,995 INFO L470 AbstractCegarLoop]: Abstraction has 4936 states and 15098 transitions. [2022-02-18 14:55:32,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 15098 transitions. [2022-02-18 14:55:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:33,002 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:33,002 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:33,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-18 14:55:33,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-18 14:55:33,203 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash -537638723, now seen corresponding path program 68 times [2022-02-18 14:55:33,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:33,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051719490] [2022-02-18 14:55:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:33,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:33,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051719490] [2022-02-18 14:55:33,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051719490] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:33,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998397729] [2022-02-18 14:55:33,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:55:33,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:33,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:33,444 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:33,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-18 14:55:33,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:55:33,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:33,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:33,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:34,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:34,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998397729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:34,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:34,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:55:34,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278967396] [2022-02-18 14:55:34,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:34,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:55:34,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:55:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:55:34,789 INFO L87 Difference]: Start difference. First operand 4936 states and 15098 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:42,170 INFO L93 Difference]: Finished difference Result 8215 states and 23694 transitions. [2022-02-18 14:55:42,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-02-18 14:55:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:55:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:42,183 INFO L225 Difference]: With dead ends: 8215 [2022-02-18 14:55:42,183 INFO L226 Difference]: Without dead ends: 7804 [2022-02-18 14:55:42,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2914, Invalid=28592, Unknown=0, NotChecked=0, Total=31506 [2022-02-18 14:55:42,185 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1323 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:42,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 6259 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 14:55:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2022-02-18 14:55:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4956. [2022-02-18 14:55:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4956 states, 4955 states have (on average 3.053279515640767) internal successors, (15129), 4955 states have internal predecessors, (15129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 15129 transitions. [2022-02-18 14:55:42,266 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 15129 transitions. Word has length 74 [2022-02-18 14:55:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:42,267 INFO L470 AbstractCegarLoop]: Abstraction has 4956 states and 15129 transitions. [2022-02-18 14:55:42,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 15129 transitions. [2022-02-18 14:55:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:42,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:42,274 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:42,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:42,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-02-18 14:55:42,475 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:42,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2122505823, now seen corresponding path program 69 times [2022-02-18 14:55:42,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:42,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350088538] [2022-02-18 14:55:42,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:42,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:42,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350088538] [2022-02-18 14:55:42,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350088538] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:42,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901543657] [2022-02-18 14:55:42,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:55:42,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:42,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:42,712 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:42,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-18 14:55:42,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:55:42,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:42,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:42,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:43,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:44,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901543657] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:44,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:44,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:55:44,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118515253] [2022-02-18 14:55:44,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:44,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:55:44,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:44,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:55:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:55:44,032 INFO L87 Difference]: Start difference. First operand 4956 states and 15129 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:50,585 INFO L93 Difference]: Finished difference Result 8235 states and 23774 transitions. [2022-02-18 14:55:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-18 14:55:50,586 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:55:50,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:50,599 INFO L225 Difference]: With dead ends: 8235 [2022-02-18 14:55:50,599 INFO L226 Difference]: Without dead ends: 7911 [2022-02-18 14:55:50,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10814 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2796, Invalid=27654, Unknown=0, NotChecked=0, Total=30450 [2022-02-18 14:55:50,601 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1451 mSDsluCounter, 5476 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:50,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5512 Invalid, 3218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-18 14:55:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2022-02-18 14:55:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 4745. [2022-02-18 14:55:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 3.0413153456998314) internal successors, (14428), 4744 states have internal predecessors, (14428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 14428 transitions. [2022-02-18 14:55:50,683 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 14428 transitions. Word has length 74 [2022-02-18 14:55:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:50,683 INFO L470 AbstractCegarLoop]: Abstraction has 4745 states and 14428 transitions. [2022-02-18 14:55:50,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 14428 transitions. [2022-02-18 14:55:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:50,690 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:50,690 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:50,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-18 14:55:50,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:50,891 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1337103017, now seen corresponding path program 70 times [2022-02-18 14:55:50,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:50,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840349692] [2022-02-18 14:55:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:51,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:51,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840349692] [2022-02-18 14:55:51,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840349692] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:51,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337845928] [2022-02-18 14:55:51,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:55:51,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:51,123 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:51,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-18 14:55:51,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:55:51,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:51,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:51,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:51,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:55:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:52,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337845928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:55:52,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:55:52,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:55:52,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587003303] [2022-02-18 14:55:52,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:55:52,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:55:52,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:55:52,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:55:52,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1466, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:55:52,414 INFO L87 Difference]: Start difference. First operand 4745 states and 14428 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:55:58,766 INFO L93 Difference]: Finished difference Result 7744 states and 22450 transitions. [2022-02-18 14:55:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-18 14:55:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:55:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:55:58,779 INFO L225 Difference]: With dead ends: 7744 [2022-02-18 14:55:58,780 INFO L226 Difference]: Without dead ends: 7501 [2022-02-18 14:55:58,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9594 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2653, Invalid=24737, Unknown=0, NotChecked=0, Total=27390 [2022-02-18 14:55:58,781 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1171 mSDsluCounter, 5668 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 5666 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:55:58,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 5666 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:55:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-02-18 14:55:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 4951. [2022-02-18 14:55:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 3.041212121212121) internal successors, (15054), 4950 states have internal predecessors, (15054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:55:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 15054 transitions. [2022-02-18 14:55:58,870 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 15054 transitions. Word has length 74 [2022-02-18 14:55:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:55:58,870 INFO L470 AbstractCegarLoop]: Abstraction has 4951 states and 15054 transitions. [2022-02-18 14:55:58,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:55:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 15054 transitions. [2022-02-18 14:55:58,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:55:58,878 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:55:58,878 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:55:58,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-18 14:55:59,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:59,078 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:55:59,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:55:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash -476585623, now seen corresponding path program 71 times [2022-02-18 14:55:59,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:55:59,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227965378] [2022-02-18 14:55:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:55:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:55:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:55:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:59,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:55:59,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227965378] [2022-02-18 14:55:59,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227965378] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:55:59,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222777202] [2022-02-18 14:55:59,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:55:59,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:55:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:55:59,307 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:55:59,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-18 14:55:59,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:55:59,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:55:59,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:55:59,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:55:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:55:59,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:00,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222777202] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:00,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:00,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:56:00,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880075810] [2022-02-18 14:56:00,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:00,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:56:00,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:56:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:56:00,636 INFO L87 Difference]: Start difference. First operand 4951 states and 15054 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:10,698 INFO L93 Difference]: Finished difference Result 9912 states and 28532 transitions. [2022-02-18 14:56:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-02-18 14:56:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:56:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:10,715 INFO L225 Difference]: With dead ends: 9912 [2022-02-18 14:56:10,716 INFO L226 Difference]: Without dead ends: 9708 [2022-02-18 14:56:10,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19618 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=4533, Invalid=45419, Unknown=0, NotChecked=0, Total=49952 [2022-02-18 14:56:10,719 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1340 mSDsluCounter, 8535 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 4538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:10,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 8503 Invalid, 4538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 4310 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 14:56:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9708 states. [2022-02-18 14:56:10,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9708 to 5027. [2022-02-18 14:56:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 5026 states have (on average 3.047950656585754) internal successors, (15319), 5026 states have internal predecessors, (15319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 15319 transitions. [2022-02-18 14:56:10,849 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 15319 transitions. Word has length 74 [2022-02-18 14:56:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:10,850 INFO L470 AbstractCegarLoop]: Abstraction has 5027 states and 15319 transitions. [2022-02-18 14:56:10,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 15319 transitions. [2022-02-18 14:56:10,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:56:10,857 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:10,857 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:56:10,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-18 14:56:11,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:11,058 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:11,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1150458879, now seen corresponding path program 72 times [2022-02-18 14:56:11,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:11,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327318305] [2022-02-18 14:56:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:11,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:11,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:11,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327318305] [2022-02-18 14:56:11,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327318305] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:11,269 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578285729] [2022-02-18 14:56:11,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:56:11,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:11,270 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:56:11,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-18 14:56:11,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:56:11,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:11,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:56:11,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:11,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:12,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578285729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:12,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:12,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-02-18 14:56:12,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374626551] [2022-02-18 14:56:12,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:12,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:56:12,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:56:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:56:12,637 INFO L87 Difference]: Start difference. First operand 5027 states and 15319 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:56:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:21,955 INFO L93 Difference]: Finished difference Result 8845 states and 25299 transitions. [2022-02-18 14:56:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-18 14:56:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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 74 [2022-02-18 14:56:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:21,971 INFO L225 Difference]: With dead ends: 8845 [2022-02-18 14:56:21,972 INFO L226 Difference]: Without dead ends: 8545 [2022-02-18 14:56:21,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15500 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3798, Invalid=37614, Unknown=0, NotChecked=0, Total=41412 [2022-02-18 14:56:21,974 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1369 mSDsluCounter, 7311 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 7306 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:21,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 7306 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3731 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-18 14:56:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2022-02-18 14:56:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 4983. [2022-02-18 14:56:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 3.0497792051384987) internal successors, (15194), 4982 states have internal predecessors, (15194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 15194 transitions. [2022-02-18 14:56:22,065 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 15194 transitions. Word has length 74 [2022-02-18 14:56:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:22,065 INFO L470 AbstractCegarLoop]: Abstraction has 4983 states and 15194 transitions. [2022-02-18 14:56:22,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 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) [2022-02-18 14:56:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 15194 transitions. [2022-02-18 14:56:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:56:22,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:22,072 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:56:22,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:22,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-18 14:56:22,273 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1173322375, now seen corresponding path program 73 times [2022-02-18 14:56:22,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:22,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83077895] [2022-02-18 14:56:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:22,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:22,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83077895] [2022-02-18 14:56:22,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83077895] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:22,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981258359] [2022-02-18 14:56:22,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:56:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:22,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:22,474 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:56:22,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-18 14:56:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:22,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:56:22,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:23,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:23,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981258359] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:23,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:23,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:56:23,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753436505] [2022-02-18 14:56:23,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:23,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:56:23,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:56:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:56:23,609 INFO L87 Difference]: Start difference. First operand 4983 states and 15194 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:26,385 INFO L93 Difference]: Finished difference Result 7537 states and 22138 transitions. [2022-02-18 14:56:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-18 14:56:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:56:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:26,399 INFO L225 Difference]: With dead ends: 7537 [2022-02-18 14:56:26,399 INFO L226 Difference]: Without dead ends: 7435 [2022-02-18 14:56:26,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1361, Invalid=10411, Unknown=0, NotChecked=0, Total=11772 [2022-02-18 14:56:26,400 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 778 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:26,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 4300 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:56:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2022-02-18 14:56:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 5155. [2022-02-18 14:56:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 3.053744664338378) internal successors, (15739), 5154 states have internal predecessors, (15739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 15739 transitions. [2022-02-18 14:56:26,489 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 15739 transitions. Word has length 74 [2022-02-18 14:56:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:26,489 INFO L470 AbstractCegarLoop]: Abstraction has 5155 states and 15739 transitions. [2022-02-18 14:56:26,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 15739 transitions. [2022-02-18 14:56:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:56:26,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:26,497 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:56:26,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-18 14:56:26,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:26,698 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1152604989, now seen corresponding path program 74 times [2022-02-18 14:56:26,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:26,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428280524] [2022-02-18 14:56:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:26,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:26,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:26,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428280524] [2022-02-18 14:56:26,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428280524] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:26,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010126892] [2022-02-18 14:56:26,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:56:26,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:26,907 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:56:26,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-18 14:56:26,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:56:26,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:26,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:56:26,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:27,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:28,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010126892] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:28,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:28,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:56:28,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259430870] [2022-02-18 14:56:28,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:28,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:56:28,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:56:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:56:28,006 INFO L87 Difference]: Start difference. First operand 5155 states and 15739 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:30,725 INFO L93 Difference]: Finished difference Result 7381 states and 21761 transitions. [2022-02-18 14:56:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-18 14:56:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:56:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:30,737 INFO L225 Difference]: With dead ends: 7381 [2022-02-18 14:56:30,737 INFO L226 Difference]: Without dead ends: 7279 [2022-02-18 14:56:30,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1201, Invalid=8899, Unknown=0, NotChecked=0, Total=10100 [2022-02-18 14:56:30,738 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 873 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:30,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 3724 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:56:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2022-02-18 14:56:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 5191. [2022-02-18 14:56:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 3.0539499036608864) internal successors, (15850), 5190 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 15850 transitions. [2022-02-18 14:56:30,816 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 15850 transitions. Word has length 74 [2022-02-18 14:56:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:30,816 INFO L470 AbstractCegarLoop]: Abstraction has 5191 states and 15850 transitions. [2022-02-18 14:56:30,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 15850 transitions. [2022-02-18 14:56:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:56:30,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:30,824 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:56:30,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-18 14:56:31,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:31,024 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1797105751, now seen corresponding path program 75 times [2022-02-18 14:56:31,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:31,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686919412] [2022-02-18 14:56:31,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:31,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:31,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:31,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686919412] [2022-02-18 14:56:31,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686919412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:31,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073236624] [2022-02-18 14:56:31,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:56:31,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:31,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:31,237 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:56:31,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-18 14:56:31,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:56:31,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:56:31,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:31,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:32,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073236624] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:32,378 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:32,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:56:32,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289490820] [2022-02-18 14:56:32,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:32,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:56:32,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:56:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:56:32,379 INFO L87 Difference]: Start difference. First operand 5191 states and 15850 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:43,086 INFO L93 Difference]: Finished difference Result 12072 states and 34561 transitions. [2022-02-18 14:56:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-02-18 14:56:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:56:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:43,106 INFO L225 Difference]: With dead ends: 12072 [2022-02-18 14:56:43,106 INFO L226 Difference]: Without dead ends: 11655 [2022-02-18 14:56:43,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24045 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=7539, Invalid=54711, Unknown=0, NotChecked=0, Total=62250 [2022-02-18 14:56:43,110 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1864 mSDsluCounter, 8156 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 8054 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:43,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 8054 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 14:56:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2022-02-18 14:56:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 5495. [2022-02-18 14:56:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5495 states, 5494 states have (on average 3.0633418274481254) internal successors, (16830), 5494 states have internal predecessors, (16830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 16830 transitions. [2022-02-18 14:56:43,264 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 16830 transitions. Word has length 74 [2022-02-18 14:56:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:43,264 INFO L470 AbstractCegarLoop]: Abstraction has 5495 states and 16830 transitions. [2022-02-18 14:56:43,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 16830 transitions. [2022-02-18 14:56:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:56:43,271 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:43,271 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:56:43,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:43,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-18 14:56:43,472 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 746021723, now seen corresponding path program 76 times [2022-02-18 14:56:43,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:43,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361890243] [2022-02-18 14:56:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:43,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:43,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361890243] [2022-02-18 14:56:43,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361890243] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:43,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412000431] [2022-02-18 14:56:43,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:56:43,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:43,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:43,691 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:56:43,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-18 14:56:43,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:56:43,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:43,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:56:43,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:44,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:45,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412000431] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:45,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:45,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:56:45,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629094034] [2022-02-18 14:56:45,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:45,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:56:45,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:45,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:56:45,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:56:45,087 INFO L87 Difference]: Start difference. First operand 5495 states and 16830 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:56,596 INFO L93 Difference]: Finished difference Result 11938 states and 34498 transitions. [2022-02-18 14:56:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-02-18 14:56:56,596 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:56:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:56,622 INFO L225 Difference]: With dead ends: 11938 [2022-02-18 14:56:56,622 INFO L226 Difference]: Without dead ends: 11542 [2022-02-18 14:56:56,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19156 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=3949, Invalid=46003, Unknown=0, NotChecked=0, Total=49952 [2022-02-18 14:56:56,625 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1504 mSDsluCounter, 8896 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 8911 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:56,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 8911 Invalid, 4825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-18 14:56:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2022-02-18 14:56:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 6178. [2022-02-18 14:56:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 6177 states have (on average 3.0838594787113487) internal successors, (19049), 6177 states have internal predecessors, (19049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 19049 transitions. [2022-02-18 14:56:56,758 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 19049 transitions. Word has length 74 [2022-02-18 14:56:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:56,758 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 19049 transitions. [2022-02-18 14:56:56,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:56:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 19049 transitions. [2022-02-18 14:56:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:56:56,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:56,768 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:56:56,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-18 14:56:56,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-18 14:56:56,970 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash 72148467, now seen corresponding path program 77 times [2022-02-18 14:56:56,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:56,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295685783] [2022-02-18 14:56:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:57,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:57,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295685783] [2022-02-18 14:56:57,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295685783] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:57,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105263383] [2022-02-18 14:56:57,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:56:57,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:57,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:57,188 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:56:57,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-18 14:56:57,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:56:57,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:57,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:56:57,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:57,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:58,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105263383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:58,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:58,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:56:58,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246237667] [2022-02-18 14:56:58,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:58,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:56:58,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:56:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:56:58,639 INFO L87 Difference]: Start difference. First operand 6178 states and 19049 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:08,667 INFO L93 Difference]: Finished difference Result 12476 states and 36433 transitions. [2022-02-18 14:57:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-02-18 14:57:08,667 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:57:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:08,688 INFO L225 Difference]: With dead ends: 12476 [2022-02-18 14:57:08,688 INFO L226 Difference]: Without dead ends: 11945 [2022-02-18 14:57:08,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17076 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3982, Invalid=41174, Unknown=0, NotChecked=0, Total=45156 [2022-02-18 14:57:08,690 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1507 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:08,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 6175 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3419 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:57:08,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11945 states. [2022-02-18 14:57:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11945 to 6794. [2022-02-18 14:57:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6794 states, 6793 states have (on average 3.103636095981157) internal successors, (21083), 6793 states have internal predecessors, (21083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 21083 transitions. [2022-02-18 14:57:08,827 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 21083 transitions. Word has length 74 [2022-02-18 14:57:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:08,827 INFO L470 AbstractCegarLoop]: Abstraction has 6794 states and 21083 transitions. [2022-02-18 14:57:08,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 21083 transitions. [2022-02-18 14:57:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:57:08,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:08,838 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:57:08,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-18 14:57:09,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:09,039 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1300662113, now seen corresponding path program 78 times [2022-02-18 14:57:09,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:09,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975296469] [2022-02-18 14:57:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:09,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:09,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:09,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975296469] [2022-02-18 14:57:09,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975296469] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:09,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347427521] [2022-02-18 14:57:09,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:57:09,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:09,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:09,258 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:09,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-18 14:57:09,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:57:09,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:09,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:57:09,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:09,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:10,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347427521] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:10,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:10,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:57:10,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987441240] [2022-02-18 14:57:10,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:10,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:57:10,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:57:10,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:57:10,612 INFO L87 Difference]: Start difference. First operand 6794 states and 21083 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:20,322 INFO L93 Difference]: Finished difference Result 12284 states and 35865 transitions. [2022-02-18 14:57:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-02-18 14:57:20,322 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:57:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:20,345 INFO L225 Difference]: With dead ends: 12284 [2022-02-18 14:57:20,345 INFO L226 Difference]: Without dead ends: 11858 [2022-02-18 14:57:20,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17311 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=3918, Invalid=42092, Unknown=0, NotChecked=0, Total=46010 [2022-02-18 14:57:20,349 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1358 mSDsluCounter, 6121 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 6177 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:20,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 6177 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:57:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11858 states. [2022-02-18 14:57:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11858 to 6495. [2022-02-18 14:57:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 6494 states have (on average 3.092700954727441) internal successors, (20084), 6494 states have internal predecessors, (20084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 20084 transitions. [2022-02-18 14:57:20,520 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 20084 transitions. Word has length 74 [2022-02-18 14:57:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:20,521 INFO L470 AbstractCegarLoop]: Abstraction has 6495 states and 20084 transitions. [2022-02-18 14:57:20,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 20084 transitions. [2022-02-18 14:57:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:57:20,531 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:20,531 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:57:20,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:20,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:20,731 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 574079627, now seen corresponding path program 79 times [2022-02-18 14:57:20,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:20,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747590338] [2022-02-18 14:57:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:20,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:20,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747590338] [2022-02-18 14:57:20,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747590338] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:20,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073930031] [2022-02-18 14:57:20,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:57:20,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:20,941 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:20,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-18 14:57:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:21,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:57:21,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:21,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:22,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073930031] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:22,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:22,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:57:22,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629137921] [2022-02-18 14:57:22,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:22,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:57:22,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:57:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:57:22,184 INFO L87 Difference]: Start difference. First operand 6495 states and 20084 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:30,252 INFO L93 Difference]: Finished difference Result 11398 states and 34007 transitions. [2022-02-18 14:57:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-02-18 14:57:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:57:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:30,272 INFO L225 Difference]: With dead ends: 11398 [2022-02-18 14:57:30,272 INFO L226 Difference]: Without dead ends: 11185 [2022-02-18 14:57:30,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13254 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3326, Invalid=32964, Unknown=0, NotChecked=0, Total=36290 [2022-02-18 14:57:30,274 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1054 mSDsluCounter, 6568 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 3340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:30,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 6578 Invalid, 3340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-18 14:57:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11185 states. [2022-02-18 14:57:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11185 to 6991. [2022-02-18 14:57:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 3.0907010014306153) internal successors, (21604), 6990 states have internal predecessors, (21604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 21604 transitions. [2022-02-18 14:57:30,414 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 21604 transitions. Word has length 74 [2022-02-18 14:57:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 6991 states and 21604 transitions. [2022-02-18 14:57:30,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 21604 transitions. [2022-02-18 14:57:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:57:30,425 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:30,425 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:57:30,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:30,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-02-18 14:57:30,626 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:30,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1239609013, now seen corresponding path program 80 times [2022-02-18 14:57:30,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:30,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358167129] [2022-02-18 14:57:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:30,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:30,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:30,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358167129] [2022-02-18 14:57:30,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358167129] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:30,840 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669785818] [2022-02-18 14:57:30,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:57:30,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:30,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:30,841 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:30,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-18 14:57:30,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:57:30,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:57:30,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:31,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:32,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669785818] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:32,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:32,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:57:32,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629670697] [2022-02-18 14:57:32,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:32,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:57:32,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:57:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:57:32,171 INFO L87 Difference]: Start difference. First operand 6991 states and 21604 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:44,517 INFO L93 Difference]: Finished difference Result 14406 states and 42711 transitions. [2022-02-18 14:57:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-02-18 14:57:44,517 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:57:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:44,545 INFO L225 Difference]: With dead ends: 14406 [2022-02-18 14:57:44,545 INFO L226 Difference]: Without dead ends: 14202 [2022-02-18 14:57:44,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23037 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=5051, Invalid=53755, Unknown=0, NotChecked=0, Total=58806 [2022-02-18 14:57:44,547 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1422 mSDsluCounter, 7274 mSDsCounter, 0 mSdLazyCounter, 3969 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 7348 SdHoareTripleChecker+Invalid, 4218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:44,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 7348 Invalid, 4218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 3969 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 14:57:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14202 states. [2022-02-18 14:57:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14202 to 7319. [2022-02-18 14:57:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 7318 states have (on average 3.114785460508336) internal successors, (22794), 7318 states have internal predecessors, (22794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 22794 transitions. [2022-02-18 14:57:44,699 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 22794 transitions. Word has length 74 [2022-02-18 14:57:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:44,699 INFO L470 AbstractCegarLoop]: Abstraction has 7319 states and 22794 transitions. [2022-02-18 14:57:44,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 22794 transitions. [2022-02-18 14:57:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:57:44,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:44,710 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:57:44,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-18 14:57:44,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:44,911 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482269, now seen corresponding path program 81 times [2022-02-18 14:57:44,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:44,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082170065] [2022-02-18 14:57:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:44,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:45,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:45,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082170065] [2022-02-18 14:57:45,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082170065] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:45,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008471191] [2022-02-18 14:57:45,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:57:45,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:45,133 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:45,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-18 14:57:45,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:57:45,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:45,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-18 14:57:45,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:45,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:46,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008471191] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:46,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:46,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-02-18 14:57:46,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145721667] [2022-02-18 14:57:46,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:46,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-18 14:57:46,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-18 14:57:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-02-18 14:57:46,847 INFO L87 Difference]: Start difference. First operand 7319 states and 22794 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:57,251 INFO L93 Difference]: Finished difference Result 12684 states and 37596 transitions. [2022-02-18 14:57:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-18 14:57:57,251 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:57:57,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:57,285 INFO L225 Difference]: With dead ends: 12684 [2022-02-18 14:57:57,285 INFO L226 Difference]: Without dead ends: 12501 [2022-02-18 14:57:57,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15629 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4664, Invalid=38808, Unknown=0, NotChecked=0, Total=43472 [2022-02-18 14:57:57,288 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1747 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 3633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:57,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 5476 Invalid, 3633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-18 14:57:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2022-02-18 14:57:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 7303. [2022-02-18 14:57:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7303 states, 7302 states have (on average 3.115036976170912) internal successors, (22746), 7302 states have internal predecessors, (22746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 22746 transitions. [2022-02-18 14:57:57,466 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 22746 transitions. Word has length 74 [2022-02-18 14:57:57,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:57,466 INFO L470 AbstractCegarLoop]: Abstraction has 7303 states and 22746 transitions. [2022-02-18 14:57:57,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:57:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 22746 transitions. [2022-02-18 14:57:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:57:57,478 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:57,478 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:57:57,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:57,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:57,679 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 746662277, now seen corresponding path program 82 times [2022-02-18 14:57:57,679 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:57,679 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644389968] [2022-02-18 14:57:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:57,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:57,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644389968] [2022-02-18 14:57:57,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644389968] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:57,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887794345] [2022-02-18 14:57:57,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:57:57,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:57,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:57,898 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:57:57,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-18 14:57:57,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:57:57,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:57,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:57:57,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:58,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:59,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887794345] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:59,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:59,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:57:59,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979671265] [2022-02-18 14:57:59,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:59,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:57:59,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:57:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:57:59,172 INFO L87 Difference]: Start difference. First operand 7303 states and 22746 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:08,146 INFO L93 Difference]: Finished difference Result 12908 states and 38826 transitions. [2022-02-18 14:58:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-02-18 14:58:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:58:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:08,171 INFO L225 Difference]: With dead ends: 12908 [2022-02-18 14:58:08,171 INFO L226 Difference]: Without dead ends: 12509 [2022-02-18 14:58:08,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17130 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4124, Invalid=41458, Unknown=0, NotChecked=0, Total=45582 [2022-02-18 14:58:08,173 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1197 mSDsluCounter, 7347 mSDsCounter, 0 mSdLazyCounter, 4002 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 4002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:08,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 7333 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 4002 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-18 14:58:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2022-02-18 14:58:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 7875. [2022-02-18 14:58:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7875 states, 7874 states have (on average 3.132715265430531) internal successors, (24667), 7874 states have internal predecessors, (24667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7875 states to 7875 states and 24667 transitions. [2022-02-18 14:58:08,330 INFO L78 Accepts]: Start accepts. Automaton has 7875 states and 24667 transitions. Word has length 74 [2022-02-18 14:58:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:08,330 INFO L470 AbstractCegarLoop]: Abstraction has 7875 states and 24667 transitions. [2022-02-18 14:58:08,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7875 states and 24667 transitions. [2022-02-18 14:58:08,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:58:08,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:08,342 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:58:08,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:08,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-02-18 14:58:08,543 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1031249583, now seen corresponding path program 83 times [2022-02-18 14:58:08,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:08,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473069395] [2022-02-18 14:58:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:08,791 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:08,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473069395] [2022-02-18 14:58:08,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473069395] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:08,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210891891] [2022-02-18 14:58:08,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:58:08,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:08,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:08,792 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:08,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-18 14:58:08,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:58:08,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:08,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:58:08,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:09,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:10,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210891891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:10,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:10,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:58:10,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903062564] [2022-02-18 14:58:10,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:10,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:58:10,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:10,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:58:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:58:10,097 INFO L87 Difference]: Start difference. First operand 7875 states and 24667 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:18,374 INFO L93 Difference]: Finished difference Result 13497 states and 40619 transitions. [2022-02-18 14:58:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-02-18 14:58:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:58:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:18,401 INFO L225 Difference]: With dead ends: 13497 [2022-02-18 14:58:18,402 INFO L226 Difference]: Without dead ends: 12972 [2022-02-18 14:58:18,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13033 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3158, Invalid=32752, Unknown=0, NotChecked=0, Total=35910 [2022-02-18 14:58:18,404 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1193 mSDsluCounter, 8077 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:18,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 7996 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 14:58:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12972 states. [2022-02-18 14:58:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12972 to 8063. [2022-02-18 14:58:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8063 states, 8062 states have (on average 3.129248325477549) internal successors, (25228), 8062 states have internal predecessors, (25228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8063 states to 8063 states and 25228 transitions. [2022-02-18 14:58:18,578 INFO L78 Accepts]: Start accepts. Automaton has 8063 states and 25228 transitions. Word has length 74 [2022-02-18 14:58:18,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:18,578 INFO L470 AbstractCegarLoop]: Abstraction has 8063 states and 25228 transitions. [2022-02-18 14:58:18,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:18,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8063 states and 25228 transitions. [2022-02-18 14:58:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:58:18,591 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:18,591 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:58:18,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:18,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:18,792 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1668906567, now seen corresponding path program 84 times [2022-02-18 14:58:18,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:18,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268588573] [2022-02-18 14:58:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:18,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:18,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268588573] [2022-02-18 14:58:18,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268588573] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:18,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631776058] [2022-02-18 14:58:18,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:58:18,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:18,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:18,986 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:18,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-18 14:58:19,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:58:19,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:19,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:58:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:19,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:20,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631776058] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:20,088 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:20,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-18 14:58:20,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016269223] [2022-02-18 14:58:20,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:20,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:58:20,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:58:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:58:20,089 INFO L87 Difference]: Start difference. First operand 8063 states and 25228 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:22,999 INFO L93 Difference]: Finished difference Result 11245 states and 33982 transitions. [2022-02-18 14:58:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-18 14:58:23,000 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:58:23,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:23,022 INFO L225 Difference]: With dead ends: 11245 [2022-02-18 14:58:23,022 INFO L226 Difference]: Without dead ends: 11143 [2022-02-18 14:58:23,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1421, Invalid=10351, Unknown=0, NotChecked=0, Total=11772 [2022-02-18 14:58:23,023 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 778 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 3605 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:23,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 3605 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1646 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:58:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11143 states. [2022-02-18 14:58:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11143 to 8127. [2022-02-18 14:58:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8127 states, 8126 states have (on average 3.1316761014029044) internal successors, (25448), 8126 states have internal predecessors, (25448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 25448 transitions. [2022-02-18 14:58:23,199 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 25448 transitions. Word has length 74 [2022-02-18 14:58:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:23,199 INFO L470 AbstractCegarLoop]: Abstraction has 8127 states and 25448 transitions. [2022-02-18 14:58:23,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 25448 transitions. [2022-02-18 14:58:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:58:23,211 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:23,211 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:58:23,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:23,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:23,412 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1648189181, now seen corresponding path program 85 times [2022-02-18 14:58:23,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:23,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394254390] [2022-02-18 14:58:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:23,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:23,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:23,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394254390] [2022-02-18 14:58:23,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394254390] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:23,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358698422] [2022-02-18 14:58:23,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:58:23,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:23,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:23,611 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:23,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-18 14:58:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:23,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:58:23,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:24,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:24,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358698422] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:24,752 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:24,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:58:24,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222424598] [2022-02-18 14:58:24,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:24,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:58:24,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:58:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:58:24,753 INFO L87 Difference]: Start difference. First operand 8127 states and 25448 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:28,226 INFO L93 Difference]: Finished difference Result 11089 states and 33605 transitions. [2022-02-18 14:58:28,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-18 14:58:28,226 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:58:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:28,246 INFO L225 Difference]: With dead ends: 11089 [2022-02-18 14:58:28,246 INFO L226 Difference]: Without dead ends: 10987 [2022-02-18 14:58:28,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3168 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1322, Invalid=8980, Unknown=0, NotChecked=0, Total=10302 [2022-02-18 14:58:28,247 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 806 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:28,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3280 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:58:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2022-02-18 14:58:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 8147. [2022-02-18 14:58:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8147 states, 8146 states have (on average 3.132212128652099) internal successors, (25515), 8146 states have internal predecessors, (25515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 25515 transitions. [2022-02-18 14:58:28,387 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 25515 transitions. Word has length 74 [2022-02-18 14:58:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:28,387 INFO L470 AbstractCegarLoop]: Abstraction has 8147 states and 25515 transitions. [2022-02-18 14:58:28,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 25515 transitions. [2022-02-18 14:58:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:58:28,398 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:28,398 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:58:28,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:28,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-18 14:58:28,599 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2002277353, now seen corresponding path program 86 times [2022-02-18 14:58:28,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:28,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922952087] [2022-02-18 14:58:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:28,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:28,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:28,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922952087] [2022-02-18 14:58:28,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922952087] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:28,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89999578] [2022-02-18 14:58:28,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:58:28,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:28,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:28,828 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:28,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-18 14:58:28,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:58:28,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:28,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:58:28,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:29,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:30,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89999578] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:30,035 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:30,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:58:30,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293434460] [2022-02-18 14:58:30,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:30,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:58:30,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:30,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:58:30,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:58:30,036 INFO L87 Difference]: Start difference. First operand 8147 states and 25515 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:41,286 INFO L93 Difference]: Finished difference Result 16319 states and 48164 transitions. [2022-02-18 14:58:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-02-18 14:58:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:58:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:41,320 INFO L225 Difference]: With dead ends: 16319 [2022-02-18 14:58:41,320 INFO L226 Difference]: Without dead ends: 15821 [2022-02-18 14:58:41,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24178 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=7498, Invalid=54752, Unknown=0, NotChecked=0, Total=62250 [2022-02-18 14:58:41,323 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1721 mSDsluCounter, 9081 mSDsCounter, 0 mSdLazyCounter, 4545 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 4893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 4545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:41,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 8883 Invalid, 4893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 4545 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-18 14:58:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15821 states. [2022-02-18 14:58:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15821 to 8299. [2022-02-18 14:58:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8299 states, 8298 states have (on average 3.130995420583273) internal successors, (25981), 8298 states have internal predecessors, (25981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 25981 transitions. [2022-02-18 14:58:41,511 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 25981 transitions. Word has length 74 [2022-02-18 14:58:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:41,511 INFO L470 AbstractCegarLoop]: Abstraction has 8299 states and 25981 transitions. [2022-02-18 14:58:41,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 25981 transitions. [2022-02-18 14:58:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:58:41,523 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:41,523 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:58:41,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-18 14:58:41,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:41,723 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 250437531, now seen corresponding path program 87 times [2022-02-18 14:58:41,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:41,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437419761] [2022-02-18 14:58:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:41,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:41,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437419761] [2022-02-18 14:58:41,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437419761] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:41,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334634825] [2022-02-18 14:58:41,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:58:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:41,940 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:41,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-18 14:58:42,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:58:42,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:42,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-18 14:58:42,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:42,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:44,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334634825] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:44,204 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:44,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 48 [2022-02-18 14:58:44,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002328475] [2022-02-18 14:58:44,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:44,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-18 14:58:44,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-18 14:58:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-02-18 14:58:44,205 INFO L87 Difference]: Start difference. First operand 8299 states and 25981 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:58:51,185 INFO L93 Difference]: Finished difference Result 13523 states and 41007 transitions. [2022-02-18 14:58:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-18 14:58:51,186 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:58:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:58:51,214 INFO L225 Difference]: With dead ends: 13523 [2022-02-18 14:58:51,214 INFO L226 Difference]: Without dead ends: 13421 [2022-02-18 14:58:51,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7512 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2252, Invalid=20398, Unknown=0, NotChecked=0, Total=22650 [2022-02-18 14:58:51,216 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1584 mSDsluCounter, 4037 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:58:51,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 4047 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:58:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2022-02-18 14:58:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 8371. [2022-02-18 14:58:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 8370 states have (on average 3.131063321385902) internal successors, (26207), 8370 states have internal predecessors, (26207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 26207 transitions. [2022-02-18 14:58:51,396 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 26207 transitions. Word has length 74 [2022-02-18 14:58:51,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:58:51,396 INFO L470 AbstractCegarLoop]: Abstraction has 8371 states and 26207 transitions. [2022-02-18 14:58:51,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:58:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 26207 transitions. [2022-02-18 14:58:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:58:51,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:58:51,409 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:58:51,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-18 14:58:51,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:51,609 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:58:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:58:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1384385219, now seen corresponding path program 88 times [2022-02-18 14:58:51,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:58:51,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772006321] [2022-02-18 14:58:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:58:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:58:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:51,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:51,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772006321] [2022-02-18 14:58:51,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772006321] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:51,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924110659] [2022-02-18 14:58:51,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:58:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:51,828 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:58:51,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-18 14:58:51,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:58:51,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:51,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:58:51,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:52,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:53,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924110659] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:53,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:53,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:58:53,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231122965] [2022-02-18 14:58:53,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:58:53,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:58:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:58:53,278 INFO L87 Difference]: Start difference. First operand 8371 states and 26207 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:01,633 INFO L93 Difference]: Finished difference Result 14161 states and 42507 transitions. [2022-02-18 14:59:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-18 14:59:01,633 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:01,664 INFO L225 Difference]: With dead ends: 14161 [2022-02-18 14:59:01,665 INFO L226 Difference]: Without dead ends: 14008 [2022-02-18 14:59:01,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11407 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2992, Invalid=28514, Unknown=0, NotChecked=0, Total=31506 [2022-02-18 14:59:01,666 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1138 mSDsluCounter, 5014 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:01,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 5068 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-18 14:59:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14008 states. [2022-02-18 14:59:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14008 to 8775. [2022-02-18 14:59:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8775 states, 8774 states have (on average 3.1185320264417595) internal successors, (27362), 8774 states have internal predecessors, (27362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8775 states to 8775 states and 27362 transitions. [2022-02-18 14:59:01,842 INFO L78 Accepts]: Start accepts. Automaton has 8775 states and 27362 transitions. Word has length 74 [2022-02-18 14:59:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:01,842 INFO L470 AbstractCegarLoop]: Abstraction has 8775 states and 27362 transitions. [2022-02-18 14:59:01,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8775 states and 27362 transitions. [2022-02-18 14:59:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:01,855 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:01,855 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:01,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-02-18 14:59:02,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:02,056 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -270174689, now seen corresponding path program 89 times [2022-02-18 14:59:02,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:02,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697797962] [2022-02-18 14:59:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:02,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:02,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697797962] [2022-02-18 14:59:02,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697797962] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:02,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077287705] [2022-02-18 14:59:02,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:59:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:02,293 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:02,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-18 14:59:02,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:59:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:02,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:02,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:02,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:03,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077287705] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:03,428 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:03,428 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:59:03,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663332812] [2022-02-18 14:59:03,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:03,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:59:03,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:59:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:59:03,429 INFO L87 Difference]: Start difference. First operand 8775 states and 27362 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:07,593 INFO L93 Difference]: Finished difference Result 12607 states and 37881 transitions. [2022-02-18 14:59:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-18 14:59:07,594 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:07,618 INFO L225 Difference]: With dead ends: 12607 [2022-02-18 14:59:07,618 INFO L226 Difference]: Without dead ends: 12133 [2022-02-18 14:59:07,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2533, Invalid=16099, Unknown=0, NotChecked=0, Total=18632 [2022-02-18 14:59:07,620 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1593 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 5037 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:07,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 5037 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 14:59:07,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2022-02-18 14:59:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 9259. [2022-02-18 14:59:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9259 states, 9258 states have (on average 3.113091380427738) internal successors, (28821), 9258 states have internal predecessors, (28821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9259 states to 9259 states and 28821 transitions. [2022-02-18 14:59:07,846 INFO L78 Accepts]: Start accepts. Automaton has 9259 states and 28821 transitions. Word has length 74 [2022-02-18 14:59:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:07,846 INFO L470 AbstractCegarLoop]: Abstraction has 9259 states and 28821 transitions. [2022-02-18 14:59:07,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9259 states and 28821 transitions. [2022-02-18 14:59:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:07,859 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:07,859 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:07,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-18 14:59:08,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-02-18 14:59:08,060 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1690876699, now seen corresponding path program 90 times [2022-02-18 14:59:08,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:08,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400261868] [2022-02-18 14:59:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:08,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:08,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400261868] [2022-02-18 14:59:08,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400261868] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:08,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62466903] [2022-02-18 14:59:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:59:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:08,267 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:08,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-18 14:59:08,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:59:08,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:08,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:08,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:08,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:09,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62466903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:09,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:09,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:59:09,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232045425] [2022-02-18 14:59:09,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:09,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:59:09,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:59:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:59:09,382 INFO L87 Difference]: Start difference. First operand 9259 states and 28821 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:16,072 INFO L93 Difference]: Finished difference Result 14690 states and 43638 transitions. [2022-02-18 14:59:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-02-18 14:59:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:16,100 INFO L225 Difference]: With dead ends: 14690 [2022-02-18 14:59:16,100 INFO L226 Difference]: Without dead ends: 14486 [2022-02-18 14:59:16,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12272 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3398, Invalid=29908, Unknown=0, NotChecked=0, Total=33306 [2022-02-18 14:59:16,101 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1389 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:16,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 5448 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:59:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14486 states. [2022-02-18 14:59:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 9395. [2022-02-18 14:59:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9395 states, 9394 states have (on average 3.1129444326165636) internal successors, (29243), 9394 states have internal predecessors, (29243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9395 states to 9395 states and 29243 transitions. [2022-02-18 14:59:16,287 INFO L78 Accepts]: Start accepts. Automaton has 9395 states and 29243 transitions. Word has length 74 [2022-02-18 14:59:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:16,287 INFO L470 AbstractCegarLoop]: Abstraction has 9395 states and 29243 transitions. [2022-02-18 14:59:16,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 9395 states and 29243 transitions. [2022-02-18 14:59:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:16,302 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:16,302 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:16,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-02-18 14:59:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:16,503 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1936259769, now seen corresponding path program 91 times [2022-02-18 14:59:16,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:16,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706093432] [2022-02-18 14:59:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:16,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:16,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706093432] [2022-02-18 14:59:16,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706093432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:16,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833255783] [2022-02-18 14:59:16,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:59:16,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:16,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:16,739 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:16,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-18 14:59:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:16,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:16,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:17,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:17,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833255783] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:17,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:17,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-18 14:59:17,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950716459] [2022-02-18 14:59:17,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:17,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:59:17,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:59:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:59:17,764 INFO L87 Difference]: Start difference. First operand 9395 states and 29243 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:19,585 INFO L93 Difference]: Finished difference Result 12355 states and 37524 transitions. [2022-02-18 14:59:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-18 14:59:19,585 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:19,611 INFO L225 Difference]: With dead ends: 12355 [2022-02-18 14:59:19,611 INFO L226 Difference]: Without dead ends: 12253 [2022-02-18 14:59:19,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=839, Invalid=6643, Unknown=0, NotChecked=0, Total=7482 [2022-02-18 14:59:19,612 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 652 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:19,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 3691 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 14:59:19,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12253 states. [2022-02-18 14:59:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12253 to 9455. [2022-02-18 14:59:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9454 states have (on average 3.1085254918552994) internal successors, (29388), 9454 states have internal predecessors, (29388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 29388 transitions. [2022-02-18 14:59:19,799 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 29388 transitions. Word has length 74 [2022-02-18 14:59:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:19,799 INFO L470 AbstractCegarLoop]: Abstraction has 9455 states and 29388 transitions. [2022-02-18 14:59:19,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 29388 transitions. [2022-02-18 14:59:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:19,814 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:19,815 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:19,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-02-18 14:59:20,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:20,015 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash -525424113, now seen corresponding path program 92 times [2022-02-18 14:59:20,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:20,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404437236] [2022-02-18 14:59:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:20,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:20,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:20,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404437236] [2022-02-18 14:59:20,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404437236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:20,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235454643] [2022-02-18 14:59:20,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:59:20,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:20,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:20,220 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:20,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-18 14:59:20,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:59:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:20,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:20,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:20,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:21,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235454643] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:21,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:21,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 14:59:21,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323156483] [2022-02-18 14:59:21,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:21,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 14:59:21,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 14:59:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 14:59:21,286 INFO L87 Difference]: Start difference. First operand 9455 states and 29388 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:24,143 INFO L93 Difference]: Finished difference Result 12732 states and 38411 transitions. [2022-02-18 14:59:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-18 14:59:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:24,168 INFO L225 Difference]: With dead ends: 12732 [2022-02-18 14:59:24,168 INFO L226 Difference]: Without dead ends: 12579 [2022-02-18 14:59:24,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3656 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1364, Invalid=10408, Unknown=0, NotChecked=0, Total=11772 [2022-02-18 14:59:24,169 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 807 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:24,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 3941 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 14:59:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12579 states. [2022-02-18 14:59:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12579 to 9711. [2022-02-18 14:59:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9711 states, 9710 states have (on average 3.1159629248197733) internal successors, (30256), 9710 states have internal predecessors, (30256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 30256 transitions. [2022-02-18 14:59:24,353 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 30256 transitions. Word has length 74 [2022-02-18 14:59:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:24,353 INFO L470 AbstractCegarLoop]: Abstraction has 9711 states and 30256 transitions. [2022-02-18 14:59:24,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 30256 transitions. [2022-02-18 14:59:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:24,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:24,368 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:24,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-18 14:59:24,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:24,569 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -504706727, now seen corresponding path program 93 times [2022-02-18 14:59:24,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:24,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471358582] [2022-02-18 14:59:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:24,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:24,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471358582] [2022-02-18 14:59:24,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471358582] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:24,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104048898] [2022-02-18 14:59:24,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:59:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:24,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:24,763 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:24,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-18 14:59:24,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:59:24,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:24,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:24,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:25,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:25,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104048898] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:25,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:25,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:59:25,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448868987] [2022-02-18 14:59:25,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:59:25,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:59:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:59:25,920 INFO L87 Difference]: Start difference. First operand 9711 states and 30256 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:29,077 INFO L93 Difference]: Finished difference Result 12733 states and 38466 transitions. [2022-02-18 14:59:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-18 14:59:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:29,102 INFO L225 Difference]: With dead ends: 12733 [2022-02-18 14:59:29,103 INFO L226 Difference]: Without dead ends: 12631 [2022-02-18 14:59:29,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1118, Invalid=8194, Unknown=0, NotChecked=0, Total=9312 [2022-02-18 14:59:29,104 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 850 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:29,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 3096 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 14:59:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12631 states. [2022-02-18 14:59:29,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12631 to 9727. [2022-02-18 14:59:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9727 states, 9726 states have (on average 3.1161834258688055) internal successors, (30308), 9726 states have internal predecessors, (30308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9727 states to 9727 states and 30308 transitions. [2022-02-18 14:59:29,280 INFO L78 Accepts]: Start accepts. Automaton has 9727 states and 30308 transitions. Word has length 74 [2022-02-18 14:59:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:29,281 INFO L470 AbstractCegarLoop]: Abstraction has 9727 states and 30308 transitions. [2022-02-18 14:59:29,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9727 states and 30308 transitions. [2022-02-18 14:59:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:29,295 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:29,295 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:29,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-18 14:59:29,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:29,496 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:29,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1149207489, now seen corresponding path program 94 times [2022-02-18 14:59:29,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:29,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478066161] [2022-02-18 14:59:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:29,715 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:29,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478066161] [2022-02-18 14:59:29,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478066161] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:29,715 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890415194] [2022-02-18 14:59:29,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:59:29,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:29,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:29,717 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:29,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-18 14:59:29,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:59:29,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:29,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:29,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:30,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:30,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890415194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:30,827 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:30,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:59:30,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171374596] [2022-02-18 14:59:30,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:30,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:59:30,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:59:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:59:30,828 INFO L87 Difference]: Start difference. First operand 9727 states and 30308 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:41,271 INFO L93 Difference]: Finished difference Result 17969 states and 52462 transitions. [2022-02-18 14:59:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-02-18 14:59:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:41,304 INFO L225 Difference]: With dead ends: 17969 [2022-02-18 14:59:41,304 INFO L226 Difference]: Without dead ends: 17450 [2022-02-18 14:59:41,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24669 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=8239, Invalid=55517, Unknown=0, NotChecked=0, Total=63756 [2022-02-18 14:59:41,308 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2179 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 7191 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:41,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2179 Valid, 7191 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-18 14:59:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17450 states. [2022-02-18 14:59:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17450 to 10119. [2022-02-18 14:59:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10119 states, 10118 states have (on average 3.1241352045858863) internal successors, (31610), 10118 states have internal predecessors, (31610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 31610 transitions. [2022-02-18 14:59:41,549 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 31610 transitions. Word has length 74 [2022-02-18 14:59:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:41,549 INFO L470 AbstractCegarLoop]: Abstraction has 10119 states and 31610 transitions. [2022-02-18 14:59:41,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 31610 transitions. [2022-02-18 14:59:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:41,565 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:41,565 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:41,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-18 14:59:41,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-02-18 14:59:41,766 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1263759537, now seen corresponding path program 95 times [2022-02-18 14:59:41,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:41,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85739994] [2022-02-18 14:59:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:41,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:41,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85739994] [2022-02-18 14:59:41,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85739994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:41,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537245941] [2022-02-18 14:59:41,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:59:41,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:41,983 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:41,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-18 14:59:42,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:59:42,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:42,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:42,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:42,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:43,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537245941] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:43,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:43,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:59:43,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210986507] [2022-02-18 14:59:43,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:43,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:59:43,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:59:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:59:43,436 INFO L87 Difference]: Start difference. First operand 10119 states and 31610 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:48,813 INFO L93 Difference]: Finished difference Result 14283 states and 43308 transitions. [2022-02-18 14:59:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-18 14:59:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:59:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:48,842 INFO L225 Difference]: With dead ends: 14283 [2022-02-18 14:59:48,842 INFO L226 Difference]: Without dead ends: 14004 [2022-02-18 14:59:48,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6502 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1744, Invalid=17996, Unknown=0, NotChecked=0, Total=19740 [2022-02-18 14:59:48,844 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 902 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:48,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 4693 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 14:59:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14004 states. [2022-02-18 14:59:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14004 to 11151. [2022-02-18 14:59:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11151 states, 11150 states have (on average 3.1182062780269058) internal successors, (34768), 11150 states have internal predecessors, (34768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11151 states to 11151 states and 34768 transitions. [2022-02-18 14:59:49,070 INFO L78 Accepts]: Start accepts. Automaton has 11151 states and 34768 transitions. Word has length 74 [2022-02-18 14:59:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:49,071 INFO L470 AbstractCegarLoop]: Abstraction has 11151 states and 34768 transitions. [2022-02-18 14:59:49,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:59:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 11151 states and 34768 transitions. [2022-02-18 14:59:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:59:49,088 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:49,088 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:59:49,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-02-18 14:59:49,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-02-18 14:59:49,289 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:49,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash -914776021, now seen corresponding path program 96 times [2022-02-18 14:59:49,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:49,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156941229] [2022-02-18 14:59:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:49,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:49,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156941229] [2022-02-18 14:59:49,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156941229] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:49,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990297858] [2022-02-18 14:59:49,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:59:49,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:49,514 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:59:49,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-18 14:59:49,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:59:49,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:49,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:59:49,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:50,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:50,888 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990297858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:50,888 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:50,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 14:59:50,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508782318] [2022-02-18 14:59:50,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:50,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:59:50,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:50,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:59:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:59:50,889 INFO L87 Difference]: Start difference. First operand 11151 states and 34768 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:00,525 INFO L93 Difference]: Finished difference Result 16933 states and 50803 transitions. [2022-02-18 15:00:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-02-18 15:00:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:00:00,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:00,559 INFO L225 Difference]: With dead ends: 16933 [2022-02-18 15:00:00,559 INFO L226 Difference]: Without dead ends: 16408 [2022-02-18 15:00:00,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14183 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3426, Invalid=35186, Unknown=0, NotChecked=0, Total=38612 [2022-02-18 15:00:00,561 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1409 mSDsluCounter, 7377 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 7452 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:00,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 7452 Invalid, 4263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-18 15:00:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16408 states. [2022-02-18 15:00:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16408 to 11567. [2022-02-18 15:00:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11567 states, 11566 states have (on average 3.1322842815147847) internal successors, (36228), 11566 states have internal predecessors, (36228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11567 states to 11567 states and 36228 transitions. [2022-02-18 15:00:00,820 INFO L78 Accepts]: Start accepts. Automaton has 11567 states and 36228 transitions. Word has length 74 [2022-02-18 15:00:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:00,820 INFO L470 AbstractCegarLoop]: Abstraction has 11567 states and 36228 transitions. [2022-02-18 15:00:00,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 11567 states and 36228 transitions. [2022-02-18 15:00:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:00:00,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:00,838 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:00:00,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-02-18 15:00:01,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:01,039 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:01,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1658397179, now seen corresponding path program 97 times [2022-02-18 15:00:01,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:01,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616183241] [2022-02-18 15:00:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:01,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:01,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616183241] [2022-02-18 15:00:01,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616183241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:01,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450276867] [2022-02-18 15:00:01,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:00:01,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:01,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:01,264 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:01,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-18 15:00:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:01,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:00:01,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:01,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:02,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450276867] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:02,680 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:02,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 15:00:02,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171202246] [2022-02-18 15:00:02,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:02,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 15:00:02,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 15:00:02,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 15:00:02,681 INFO L87 Difference]: Start difference. First operand 11567 states and 36228 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:07,536 INFO L93 Difference]: Finished difference Result 15141 states and 46225 transitions. [2022-02-18 15:00:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-18 15:00:07,536 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:00:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:07,568 INFO L225 Difference]: With dead ends: 15141 [2022-02-18 15:00:07,569 INFO L226 Difference]: Without dead ends: 14928 [2022-02-18 15:00:07,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1507, Invalid=15785, Unknown=0, NotChecked=0, Total=17292 [2022-02-18 15:00:07,570 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 862 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:07,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 4522 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 15:00:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14928 states. [2022-02-18 15:00:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14928 to 12035. [2022-02-18 15:00:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12035 states, 12034 states have (on average 3.1320425461193286) internal successors, (37691), 12034 states have internal predecessors, (37691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12035 states to 12035 states and 37691 transitions. [2022-02-18 15:00:07,880 INFO L78 Accepts]: Start accepts. Automaton has 12035 states and 37691 transitions. Word has length 74 [2022-02-18 15:00:07,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:07,880 INFO L470 AbstractCegarLoop]: Abstraction has 12035 states and 37691 transitions. [2022-02-18 15:00:07,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 12035 states and 37691 transitions. [2022-02-18 15:00:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:00:07,903 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:07,905 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:00:07,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:08,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:08,105 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2007380695, now seen corresponding path program 98 times [2022-02-18 15:00:08,106 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:08,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494254411] [2022-02-18 15:00:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:08,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:08,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:08,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494254411] [2022-02-18 15:00:08,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494254411] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:08,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823701587] [2022-02-18 15:00:08,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:00:08,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:08,335 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:08,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-18 15:00:08,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:00:08,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:08,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:00:08,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:08,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:09,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823701587] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:09,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:09,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 15:00:09,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915664293] [2022-02-18 15:00:09,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:09,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 15:00:09,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 15:00:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 15:00:09,772 INFO L87 Difference]: Start difference. First operand 12035 states and 37691 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:18,662 INFO L93 Difference]: Finished difference Result 18266 states and 55335 transitions. [2022-02-18 15:00:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-02-18 15:00:18,662 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:00:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:18,699 INFO L225 Difference]: With dead ends: 18266 [2022-02-18 15:00:18,699 INFO L226 Difference]: Without dead ends: 17771 [2022-02-18 15:00:18,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12665 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3170, Invalid=31986, Unknown=0, NotChecked=0, Total=35156 [2022-02-18 15:00:18,702 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 1388 mSDsluCounter, 7728 mSDsCounter, 0 mSdLazyCounter, 4133 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 7819 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:18,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 7819 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 4133 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 15:00:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17771 states. [2022-02-18 15:00:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17771 to 12519. [2022-02-18 15:00:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12519 states, 12518 states have (on average 3.1578526921233423) internal successors, (39530), 12518 states have internal predecessors, (39530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 39530 transitions. [2022-02-18 15:00:18,971 INFO L78 Accepts]: Start accepts. Automaton has 12519 states and 39530 transitions. Word has length 74 [2022-02-18 15:00:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:18,972 INFO L470 AbstractCegarLoop]: Abstraction has 12519 states and 39530 transitions. [2022-02-18 15:00:18,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12519 states and 39530 transitions. [2022-02-18 15:00:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:00:18,993 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:18,993 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:00:19,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-02-18 15:00:19,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-02-18 15:00:19,195 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:19,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1221977889, now seen corresponding path program 99 times [2022-02-18 15:00:19,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:19,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376841623] [2022-02-18 15:00:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:19,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:19,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376841623] [2022-02-18 15:00:19,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376841623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:19,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428706548] [2022-02-18 15:00:19,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 15:00:19,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:19,418 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:19,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-18 15:00:19,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 15:00:19,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:19,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-18 15:00:19,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:20,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:21,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428706548] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:21,238 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:21,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-02-18 15:00:21,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546197672] [2022-02-18 15:00:21,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:21,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-02-18 15:00:21,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:21,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-02-18 15:00:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2022-02-18 15:00:21,239 INFO L87 Difference]: Start difference. First operand 12519 states and 39530 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:27,702 INFO L93 Difference]: Finished difference Result 16738 states and 51308 transitions. [2022-02-18 15:00:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-18 15:00:27,702 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:00:27,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:27,738 INFO L225 Difference]: With dead ends: 16738 [2022-02-18 15:00:27,738 INFO L226 Difference]: Without dead ends: 16576 [2022-02-18 15:00:27,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5471 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2129, Invalid=16777, Unknown=0, NotChecked=0, Total=18906 [2022-02-18 15:00:27,740 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1341 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:27,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 3725 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 15:00:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16576 states. [2022-02-18 15:00:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16576 to 12727. [2022-02-18 15:00:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 12726 states have (on average 3.165959453088166) internal successors, (40290), 12726 states have internal predecessors, (40290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 40290 transitions. [2022-02-18 15:00:28,030 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 40290 transitions. Word has length 74 [2022-02-18 15:00:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:28,030 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 40290 transitions. [2022-02-18 15:00:28,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 40290 transitions. [2022-02-18 15:00:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:00:28,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:28,053 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:00:28,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-02-18 15:00:28,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:28,254 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -591710751, now seen corresponding path program 100 times [2022-02-18 15:00:28,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:28,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404142705] [2022-02-18 15:00:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:28,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:28,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404142705] [2022-02-18 15:00:28,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404142705] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:28,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307555974] [2022-02-18 15:00:28,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 15:00:28,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:28,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:28,472 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:28,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-18 15:00:28,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 15:00:28,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:28,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:00:28,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:29,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:29,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307555974] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:29,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:29,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 15:00:29,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943342385] [2022-02-18 15:00:29,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:29,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 15:00:29,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 15:00:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 15:00:29,749 INFO L87 Difference]: Start difference. First operand 12727 states and 40290 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:41,220 INFO L93 Difference]: Finished difference Result 21319 states and 64920 transitions. [2022-02-18 15:00:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-02-18 15:00:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:00:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:41,263 INFO L225 Difference]: With dead ends: 21319 [2022-02-18 15:00:41,264 INFO L226 Difference]: Without dead ends: 21115 [2022-02-18 15:00:41,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18686 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=4394, Invalid=43348, Unknown=0, NotChecked=0, Total=47742 [2022-02-18 15:00:41,267 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1619 mSDsluCounter, 6823 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 6964 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:41,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 6964 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-18 15:00:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21115 states. [2022-02-18 15:00:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21115 to 14347. [2022-02-18 15:00:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14347 states, 14346 states have (on average 3.182001951763558) internal successors, (45649), 14346 states have internal predecessors, (45649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 45649 transitions. [2022-02-18 15:00:41,607 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 45649 transitions. Word has length 74 [2022-02-18 15:00:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:41,607 INFO L470 AbstractCegarLoop]: Abstraction has 14347 states and 45649 transitions. [2022-02-18 15:00:41,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 45649 transitions. [2022-02-18 15:00:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:00:41,632 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:41,632 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:00:41,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:41,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-02-18 15:00:41,833 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1265584007, now seen corresponding path program 101 times [2022-02-18 15:00:41,833 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:41,833 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535544746] [2022-02-18 15:00:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:42,047 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:42,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535544746] [2022-02-18 15:00:42,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535544746] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:42,047 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804104605] [2022-02-18 15:00:42,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 15:00:42,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:42,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:42,048 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:42,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-18 15:00:42,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 15:00:42,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:42,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:00:42,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:42,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:43,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804104605] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:43,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:43,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-02-18 15:00:43,373 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371117109] [2022-02-18 15:00:43,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:43,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 15:00:43,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 15:00:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 15:00:43,374 INFO L87 Difference]: Start difference. First operand 14347 states and 45649 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:55,253 INFO L93 Difference]: Finished difference Result 22070 states and 67298 transitions. [2022-02-18 15:00:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-02-18 15:00:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:00:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:55,304 INFO L225 Difference]: With dead ends: 22070 [2022-02-18 15:00:55,304 INFO L226 Difference]: Without dead ends: 21560 [2022-02-18 15:00:55,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18825 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4518, Invalid=44544, Unknown=0, NotChecked=0, Total=49062 [2022-02-18 15:00:55,308 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1471 mSDsluCounter, 7705 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 4498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:55,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 7834 Invalid, 4498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 15:00:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2022-02-18 15:00:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 14375. [2022-02-18 15:00:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14375 states, 14374 states have (on average 3.1789341867260332) internal successors, (45694), 14374 states have internal predecessors, (45694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14375 states to 14375 states and 45694 transitions. [2022-02-18 15:00:55,634 INFO L78 Accepts]: Start accepts. Automaton has 14375 states and 45694 transitions. Word has length 74 [2022-02-18 15:00:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:55,634 INFO L470 AbstractCegarLoop]: Abstraction has 14375 states and 45694 transitions. [2022-02-18 15:00:55,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:00:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 14375 states and 45694 transitions. [2022-02-18 15:00:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:00:55,657 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:55,657 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:00:55,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-02-18 15:00:55,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-02-18 15:00:55,858 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1021008305, now seen corresponding path program 102 times [2022-02-18 15:00:55,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:55,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760448105] [2022-02-18 15:00:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:56,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:56,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760448105] [2022-02-18 15:00:56,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760448105] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:56,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463122559] [2022-02-18 15:00:56,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 15:00:56,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:56,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:56,074 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:00:56,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-18 15:00:56,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 15:00:56,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:56,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:00:56,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:56,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:57,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463122559] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:57,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:57,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-18 15:00:57,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324204549] [2022-02-18 15:00:57,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:57,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 15:00:57,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:57,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 15:00:57,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 15:00:57,208 INFO L87 Difference]: Start difference. First operand 14375 states and 45694 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:00,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:00,106 INFO L93 Difference]: Finished difference Result 18660 states and 58002 transitions. [2022-02-18 15:01:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-18 15:01:00,106 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:00,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:00,147 INFO L225 Difference]: With dead ends: 18660 [2022-02-18 15:01:00,147 INFO L226 Difference]: Without dead ends: 18558 [2022-02-18 15:01:00,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3863 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1306, Invalid=10684, Unknown=0, NotChecked=0, Total=11990 [2022-02-18 15:01:00,149 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 851 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:00,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3007 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 15:01:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18558 states. [2022-02-18 15:01:00,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18558 to 14971. [2022-02-18 15:01:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14971 states, 14970 states have (on average 3.1810955243820978) internal successors, (47621), 14970 states have internal predecessors, (47621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14971 states to 14971 states and 47621 transitions. [2022-02-18 15:01:00,472 INFO L78 Accepts]: Start accepts. Automaton has 14971 states and 47621 transitions. Word has length 74 [2022-02-18 15:01:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:00,472 INFO L470 AbstractCegarLoop]: Abstraction has 14971 states and 47621 transitions. [2022-02-18 15:01:00,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 14971 states and 47621 transitions. [2022-02-18 15:01:00,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:00,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:00,497 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:00,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:00,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-02-18 15:01:00,697 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1000290919, now seen corresponding path program 103 times [2022-02-18 15:01:00,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:00,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602554118] [2022-02-18 15:01:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:00,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:00,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:00,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602554118] [2022-02-18 15:01:00,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602554118] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:00,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379692928] [2022-02-18 15:01:00,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:01:00,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:00,947 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:00,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-18 15:01:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:01,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:01,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:01,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:02,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379692928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:02,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:02,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 15:01:02,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073941707] [2022-02-18 15:01:02,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:02,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 15:01:02,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 15:01:02,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 15:01:02,072 INFO L87 Difference]: Start difference. First operand 14971 states and 47621 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:05,931 INFO L93 Difference]: Finished difference Result 18544 states and 57775 transitions. [2022-02-18 15:01:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-18 15:01:05,931 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:05,975 INFO L225 Difference]: With dead ends: 18544 [2022-02-18 15:01:05,976 INFO L226 Difference]: Without dead ends: 18442 [2022-02-18 15:01:05,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3456 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1297, Invalid=9833, Unknown=0, NotChecked=0, Total=11130 [2022-02-18 15:01:05,977 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 760 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:05,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2975 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 15:01:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18442 states. [2022-02-18 15:01:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18442 to 14999. [2022-02-18 15:01:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14999 states, 14998 states have (on average 3.180557407654354) internal successors, (47702), 14998 states have internal predecessors, (47702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 47702 transitions. [2022-02-18 15:01:06,401 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 47702 transitions. Word has length 74 [2022-02-18 15:01:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:06,401 INFO L470 AbstractCegarLoop]: Abstraction has 14999 states and 47702 transitions. [2022-02-18 15:01:06,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 47702 transitions. [2022-02-18 15:01:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:06,428 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:06,428 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:06,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:06,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:06,629 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1644791681, now seen corresponding path program 104 times [2022-02-18 15:01:06,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:06,630 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843025105] [2022-02-18 15:01:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:06,863 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:06,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843025105] [2022-02-18 15:01:06,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843025105] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:06,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900980900] [2022-02-18 15:01:06,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:01:06,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:06,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:06,865 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:06,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-18 15:01:06,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:01:06,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:06,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:06,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:07,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:08,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900980900] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:08,002 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:08,002 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 15:01:08,002 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532854678] [2022-02-18 15:01:08,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:08,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 15:01:08,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 15:01:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 15:01:08,003 INFO L87 Difference]: Start difference. First operand 14999 states and 47702 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:20,339 INFO L93 Difference]: Finished difference Result 25353 states and 76521 transitions. [2022-02-18 15:01:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-02-18 15:01:20,339 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:20,404 INFO L225 Difference]: With dead ends: 25353 [2022-02-18 15:01:20,404 INFO L226 Difference]: Without dead ends: 24804 [2022-02-18 15:01:20,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27108 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=8356, Invalid=60026, Unknown=0, NotChecked=0, Total=68382 [2022-02-18 15:01:20,407 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1904 mSDsluCounter, 7607 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 7567 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:20,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1904 Valid, 7567 Invalid, 4365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-18 15:01:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24804 states. [2022-02-18 15:01:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24804 to 15367. [2022-02-18 15:01:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 3.1837823766757776) internal successors, (48922), 15366 states have internal predecessors, (48922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 48922 transitions. [2022-02-18 15:01:20,826 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 48922 transitions. Word has length 74 [2022-02-18 15:01:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:20,826 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 48922 transitions. [2022-02-18 15:01:20,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 48922 transitions. [2022-02-18 15:01:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:20,852 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:20,852 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:20,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-18 15:01:21,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:21,053 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash 377723573, now seen corresponding path program 105 times [2022-02-18 15:01:21,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:21,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989597058] [2022-02-18 15:01:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:21,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:21,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989597058] [2022-02-18 15:01:21,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989597058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:21,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887964951] [2022-02-18 15:01:21,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 15:01:21,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:21,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:21,272 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:21,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-18 15:01:21,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 15:01:21,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:21,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:21,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:21,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:22,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887964951] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:22,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:22,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 15:01:22,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527835834] [2022-02-18 15:01:22,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:22,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 15:01:22,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 15:01:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 15:01:22,400 INFO L87 Difference]: Start difference. First operand 15367 states and 48922 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:26,668 INFO L93 Difference]: Finished difference Result 20342 states and 63039 transitions. [2022-02-18 15:01:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-18 15:01:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:26,711 INFO L225 Difference]: With dead ends: 20342 [2022-02-18 15:01:26,711 INFO L226 Difference]: Without dead ends: 19766 [2022-02-18 15:01:26,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6531 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2589, Invalid=16871, Unknown=0, NotChecked=0, Total=19460 [2022-02-18 15:01:26,714 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1602 mSDsluCounter, 4388 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 4485 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:26,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 4485 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-18 15:01:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19766 states. [2022-02-18 15:01:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19766 to 16015. [2022-02-18 15:01:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16015 states, 16014 states have (on average 3.185462720119895) internal successors, (51012), 16014 states have internal predecessors, (51012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16015 states to 16015 states and 51012 transitions. [2022-02-18 15:01:27,049 INFO L78 Accepts]: Start accepts. Automaton has 16015 states and 51012 transitions. Word has length 74 [2022-02-18 15:01:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:27,049 INFO L470 AbstractCegarLoop]: Abstraction has 16015 states and 51012 transitions. [2022-02-18 15:01:27,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 16015 states and 51012 transitions. [2022-02-18 15:01:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:27,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:27,076 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:27,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-18 15:01:27,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-02-18 15:01:27,277 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1042978437, now seen corresponding path program 106 times [2022-02-18 15:01:27,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:27,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428457943] [2022-02-18 15:01:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:27,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:27,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428457943] [2022-02-18 15:01:27,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428457943] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:27,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084041531] [2022-02-18 15:01:27,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 15:01:27,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:27,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:27,479 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:27,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-18 15:01:27,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 15:01:27,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:27,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:27,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:28,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:28,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084041531] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:28,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:28,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 15:01:28,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462007116] [2022-02-18 15:01:28,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 15:01:28,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 15:01:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 15:01:28,652 INFO L87 Difference]: Start difference. First operand 16015 states and 51012 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:34,380 INFO L93 Difference]: Finished difference Result 23261 states and 71080 transitions. [2022-02-18 15:01:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-02-18 15:01:34,381 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:34,433 INFO L225 Difference]: With dead ends: 23261 [2022-02-18 15:01:34,433 INFO L226 Difference]: Without dead ends: 23057 [2022-02-18 15:01:34,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9195 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2673, Invalid=23409, Unknown=0, NotChecked=0, Total=26082 [2022-02-18 15:01:34,437 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1240 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:34,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 5297 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 15:01:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23057 states. [2022-02-18 15:01:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23057 to 16183. [2022-02-18 15:01:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16182 states have (on average 3.1836608577431713) internal successors, (51518), 16182 states have internal predecessors, (51518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 51518 transitions. [2022-02-18 15:01:34,883 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 51518 transitions. Word has length 74 [2022-02-18 15:01:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:34,883 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 51518 transitions. [2022-02-18 15:01:34,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 51518 transitions. [2022-02-18 15:01:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:34,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:34,910 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:34,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-18 15:01:35,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:35,111 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1710809265, now seen corresponding path program 107 times [2022-02-18 15:01:35,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:35,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382537313] [2022-02-18 15:01:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:35,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:35,347 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:35,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382537313] [2022-02-18 15:01:35,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382537313] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:35,347 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240153583] [2022-02-18 15:01:35,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 15:01:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:35,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:35,349 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-18 15:01:35,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 15:01:35,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:35,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:35,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:35,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:36,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240153583] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:36,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:36,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-18 15:01:36,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282504510] [2022-02-18 15:01:36,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:36,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 15:01:36,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 15:01:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 15:01:36,338 INFO L87 Difference]: Start difference. First operand 16183 states and 51518 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:37,619 INFO L93 Difference]: Finished difference Result 19889 states and 62104 transitions. [2022-02-18 15:01:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-18 15:01:37,620 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:37,661 INFO L225 Difference]: With dead ends: 19889 [2022-02-18 15:01:37,662 INFO L226 Difference]: Without dead ends: 19787 [2022-02-18 15:01:37,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=559, Invalid=4411, Unknown=0, NotChecked=0, Total=4970 [2022-02-18 15:01:37,663 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 526 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:37,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2979 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-18 15:01:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19787 states. [2022-02-18 15:01:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19787 to 16183. [2022-02-18 15:01:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16183 states, 16182 states have (on average 3.1836608577431713) internal successors, (51518), 16182 states have internal predecessors, (51518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16183 states to 16183 states and 51518 transitions. [2022-02-18 15:01:38,085 INFO L78 Accepts]: Start accepts. Automaton has 16183 states and 51518 transitions. Word has length 74 [2022-02-18 15:01:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:38,085 INFO L470 AbstractCegarLoop]: Abstraction has 16183 states and 51518 transitions. [2022-02-18 15:01:38,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 16183 states and 51518 transitions. [2022-02-18 15:01:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:38,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:38,112 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:38,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:38,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:38,313 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash 864727055, now seen corresponding path program 108 times [2022-02-18 15:01:38,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:38,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527713711] [2022-02-18 15:01:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:38,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:38,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527713711] [2022-02-18 15:01:38,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527713711] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:38,559 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298181328] [2022-02-18 15:01:38,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 15:01:38,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:38,564 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:38,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-18 15:01:38,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 15:01:38,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:38,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:39,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:39,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298181328] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:39,738 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:39,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-02-18 15:01:39,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536235370] [2022-02-18 15:01:39,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:39,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 15:01:39,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 15:01:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 15:01:39,739 INFO L87 Difference]: Start difference. First operand 16183 states and 51518 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:42,380 INFO L93 Difference]: Finished difference Result 20048 states and 62492 transitions. [2022-02-18 15:01:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-18 15:01:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:42,427 INFO L225 Difference]: With dead ends: 20048 [2022-02-18 15:01:42,427 INFO L226 Difference]: Without dead ends: 19946 [2022-02-18 15:01:42,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1075, Invalid=8825, Unknown=0, NotChecked=0, Total=9900 [2022-02-18 15:01:42,429 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 788 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:42,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3483 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-18 15:01:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19946 states. [2022-02-18 15:01:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19946 to 16427. [2022-02-18 15:01:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16427 states, 16426 states have (on average 3.1842810178984537) internal successors, (52305), 16426 states have internal predecessors, (52305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16427 states to 16427 states and 52305 transitions. [2022-02-18 15:01:42,857 INFO L78 Accepts]: Start accepts. Automaton has 16427 states and 52305 transitions. Word has length 74 [2022-02-18 15:01:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:42,857 INFO L470 AbstractCegarLoop]: Abstraction has 16427 states and 52305 transitions. [2022-02-18 15:01:42,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16427 states and 52305 transitions. [2022-02-18 15:01:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:42,885 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:42,885 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:42,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-02-18 15:01:43,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:43,085 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 885444441, now seen corresponding path program 109 times [2022-02-18 15:01:43,086 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:43,086 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266231699] [2022-02-18 15:01:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:43,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:43,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266231699] [2022-02-18 15:01:43,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266231699] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:43,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882848211] [2022-02-18 15:01:43,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:01:43,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:43,293 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:43,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-18 15:01:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:43,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:43,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:43,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:44,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882848211] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:44,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:44,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-02-18 15:01:44,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439058326] [2022-02-18 15:01:44,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:44,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-18 15:01:44,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:44,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-18 15:01:44,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-02-18 15:01:44,387 INFO L87 Difference]: Start difference. First operand 16427 states and 52305 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:46,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:46,603 INFO L93 Difference]: Finished difference Result 19908 states and 62095 transitions. [2022-02-18 15:01:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-18 15:01:46,604 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 15:01:46,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:46,651 INFO L225 Difference]: With dead ends: 19908 [2022-02-18 15:01:46,651 INFO L226 Difference]: Without dead ends: 19806 [2022-02-18 15:01:46,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=858, Invalid=6282, Unknown=0, NotChecked=0, Total=7140 [2022-02-18 15:01:46,653 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 781 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:46,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 2984 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-18 15:01:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19806 states. [2022-02-18 15:01:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19806 to 16483. [2022-02-18 15:01:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16483 states, 16482 states have (on average 3.1845043077296444) internal successors, (52487), 16482 states have internal predecessors, (52487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16483 states to 16483 states and 52487 transitions. [2022-02-18 15:01:47,101 INFO L78 Accepts]: Start accepts. Automaton has 16483 states and 52487 transitions. Word has length 74 [2022-02-18 15:01:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:47,101 INFO L470 AbstractCegarLoop]: Abstraction has 16483 states and 52487 transitions. [2022-02-18 15:01:47,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 16483 states and 52487 transitions. [2022-02-18 15:01:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 15:01:47,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:47,130 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 15:01:47,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-18 15:01:47,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-02-18 15:01:47,331 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 240943679, now seen corresponding path program 110 times [2022-02-18 15:01:47,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:47,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512757585] [2022-02-18 15:01:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:47,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:47,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512757585] [2022-02-18 15:01:47,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512757585] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:47,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591123844] [2022-02-18 15:01:47,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:01:47,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:47,544 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:47,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-18 15:01:47,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:01:47,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:47,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 15:01:47,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:48,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-02-18 15:01:48,700 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-02-18 15:01:48,702 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-18 15:01:48,712 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-18 15:01:48,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:48,747 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-18 15:01:48,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-02-18 15:01:48,902 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. [2022-02-18 15:01:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-18 15:01:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-18 15:01:48,906 INFO L732 BasicCegarLoop]: Path program histogram: [110, 1, 1, 1] [2022-02-18 15:01:48,907 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 15:01:48,907 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 15:01:48,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 03:01:48 BasicIcfg [2022-02-18 15:01:48,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 15:01:48,909 INFO L158 Benchmark]: Toolchain (without parser) took 703882.82ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 117.9MB in the beginning and 698.3MB in the end (delta: -580.4MB). Peak memory consumption was 596.0MB. Max. memory is 8.0GB. [2022-02-18 15:01:48,909 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 15:01:48,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.02ms. Allocated memory is still 174.1MB. Free memory was 117.8MB in the beginning and 143.9MB in the end (delta: -26.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-02-18 15:01:48,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.25ms. Allocated memory is still 174.1MB. Free memory was 143.9MB in the beginning and 142.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 15:01:48,909 INFO L158 Benchmark]: Boogie Preprocessor took 34.61ms. Allocated memory is still 174.1MB. Free memory was 142.4MB in the beginning and 141.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 15:01:48,909 INFO L158 Benchmark]: RCFGBuilder took 374.28ms. Allocated memory is still 174.1MB. Free memory was 141.3MB in the beginning and 128.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-18 15:01:48,909 INFO L158 Benchmark]: TraceAbstraction took 703104.55ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 127.7MB in the beginning and 698.3MB in the end (delta: -570.6MB). Peak memory consumption was 605.9MB. Max. memory is 8.0GB. [2022-02-18 15:01:48,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 174.1MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 325.02ms. Allocated memory is still 174.1MB. Free memory was 117.8MB in the beginning and 143.9MB in the end (delta: -26.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.25ms. Allocated memory is still 174.1MB. Free memory was 143.9MB in the beginning and 142.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.61ms. Allocated memory is still 174.1MB. Free memory was 142.4MB in the beginning and 141.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 374.28ms. Allocated memory is still 174.1MB. Free memory was 141.3MB in the beginning and 128.2MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 703104.55ms. Allocated memory was 174.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 127.7MB in the beginning and 698.3MB in the end (delta: -570.6MB). Peak memory consumption was 605.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 75 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 703.0s, OverallIterations: 113, TraceHistogramMax: 2, PathProgramHistogramMax: 110, EmptinessCheckTime: 0.9s, AutomataDifference: 515.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117233 SdHoareTripleChecker+Valid, 98.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117233 mSDsluCounter, 471542 SdHoareTripleChecker+Invalid, 83.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 468293 mSDsCounter, 17353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241168 IncrementalHoareTripleChecker+Invalid, 258521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17353 mSolverCounterUnsat, 26547 mSDtfsCounter, 241168 mSolverCounterSat, 1.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27162 GetRequests, 13281 SyntacticMatches, 214 SemanticMatches, 13667 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738294 ImplicationChecksByTransitivity, 455.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16483occurred in iteration=112, InterpolantAutomatonStates: 11636, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.6s AutomataMinimizationTime, 112 MinimizatonAttempts, 300511 StatesRemovedByMinimization, 111 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 139.5s InterpolantComputationTime, 15873 NumberOfCodeBlocks, 15765 NumberOfCodeBlocksAsserted, 343 NumberOfCheckSat, 23384 ConstructedInterpolants, 0 QuantifiedInterpolants, 201363 SizeOfPredicates, 1437 NumberOfNonLiveVariables, 17047 ConjunctsInSsa, 2562 ConjunctsInUnsatCore, 330 InterpolantComputations, 3 PerfectInterpolantSequences, 4/1807 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown