/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/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 11:36:51,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 11:36:51,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 11:36:51,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 11:36:51,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 11:36:51,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 11:36:51,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 11:36:51,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 11:36:51,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 11:36:51,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 11:36:51,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 11:36:51,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 11:36:51,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 11:36:51,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 11:36:51,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 11:36:51,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 11:36:51,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 11:36:51,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 11:36:51,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 11:36:51,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 11:36:51,685 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 [2022-02-15 11:36:51,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 11:36:51,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 11:36:51,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 11:36:51,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 11:36:51,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 11:36:51,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 11:36:51,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 11:36:51,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 11:36:51,705 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 11:36:51,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 11:36:51,706 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 11:36:51,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 11:36:51,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 11:36:51,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 11:36:51,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 11:36:51,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 11:36:51,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 11:36:51,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 11:36:51,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 11:36:51,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 11:36:51,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 11:36:51,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 11:36:51,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 11:36:51,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 11:36:51,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 11:36:51,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:36:51,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 11:36:51,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 11:36:51,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 11:36:51,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 11:36:51,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 11:36:51,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 11:36:51,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 11:36:51,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 11:36:51,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 11:36:51,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 11:36:51,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 11:36:51,944 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 11:36:51,947 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 11:36:51,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-02-15 11:36:52,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77512d101/8fccfd75b3624d39bee730dcee896859/FLAGd091340b3 [2022-02-15 11:36:52,390 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 11:36:52,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-02-15 11:36:52,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77512d101/8fccfd75b3624d39bee730dcee896859/FLAGd091340b3 [2022-02-15 11:36:52,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77512d101/8fccfd75b3624d39bee730dcee896859 [2022-02-15 11:36:52,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 11:36:52,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 11:36:52,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 11:36:52,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 11:36:52,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 11:36:52,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7618c791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52, skipping insertion in model container [2022-02-15 11:36:52,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 11:36:52,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 11:36:52,603 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/parallel-misc-4.wvr.c[2950,2963] [2022-02-15 11:36:52,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:36:52,618 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 11:36:52,634 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/parallel-misc-4.wvr.c[2950,2963] [2022-02-15 11:36:52,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:36:52,643 INFO L208 MainTranslator]: Completed translation [2022-02-15 11:36:52,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52 WrapperNode [2022-02-15 11:36:52,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 11:36:52,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 11:36:52,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 11:36:52,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 11:36:52,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,674 INFO L137 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-02-15 11:36:52,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 11:36:52,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 11:36:52,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 11:36:52,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 11:36:52,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 11:36:52,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 11:36:52,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 11:36:52,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 11:36:52,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (1/1) ... [2022-02-15 11:36:52,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:36:52,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:52,741 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) [2022-02-15 11:36:52,761 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 [2022-02-15 11:36:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 11:36:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 11:36:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 11:36:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 11:36:52,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 11:36:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-15 11:36:52,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-15 11:36:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 11:36:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 11:36:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 11:36:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-15 11:36:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-15 11:36:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 11:36:52,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 11:36:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 11:36:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 11:36:52,785 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 11:36:52,869 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 11:36:52,871 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 11:36:53,072 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 11:36:53,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 11:36:53,094 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-15 11:36:53,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:36:53 BoogieIcfgContainer [2022-02-15 11:36:53,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 11:36:53,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 11:36:53,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 11:36:53,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 11:36:53,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:36:52" (1/3) ... [2022-02-15 11:36:53,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265664c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:36:53, skipping insertion in model container [2022-02-15 11:36:53,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:36:52" (2/3) ... [2022-02-15 11:36:53,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265664c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:36:53, skipping insertion in model container [2022-02-15 11:36:53,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:36:53" (3/3) ... [2022-02-15 11:36:53,103 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-02-15 11:36:53,107 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 11:36:53,107 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 11:36:53,107 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 11:36:53,107 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 11:36:53,138 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,139 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,139 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,139 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,140 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,141 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,143 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,143 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,143 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,143 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,144 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,144 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,144 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,144 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,147 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,148 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,151 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,151 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,152 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~lv_assert~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,152 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,153 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~lv_assert~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:36:53,159 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-15 11:36:53,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 11:36:53,202 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 [2022-02-15 11:36:53,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-15 11:36:53,212 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 105 transitions, 234 flow [2022-02-15 11:36:53,395 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2434 states, 2433 states have (on average 3.629264282778463) internal successors, (8830), 2433 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:53,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 2434 states, 2433 states have (on average 3.629264282778463) internal successors, (8830), 2433 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 11:36:53,438 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:53,439 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, 1, 1, 1, 1] [2022-02-15 11:36:53,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash 203453339, now seen corresponding path program 1 times [2022-02-15 11:36:53,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:53,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859085685] [2022-02-15 11:36:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:53,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:53,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:53,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859085685] [2022-02-15 11:36:53,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859085685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:53,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:53,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 11:36:53,681 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275060288] [2022-02-15 11:36:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:53,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-15 11:36:53,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-15 11:36:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-15 11:36:53,725 INFO L87 Difference]: Start difference. First operand has 2434 states, 2433 states have (on average 3.629264282778463) internal successors, (8830), 2433 states have internal predecessors, (8830), 0 states have call successors, (0), 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 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:53,808 INFO L93 Difference]: Finished difference Result 2434 states and 8371 transitions. [2022-02-15 11:36:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 11:36:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-02-15 11:36:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:53,843 INFO L225 Difference]: With dead ends: 2434 [2022-02-15 11:36:53,844 INFO L226 Difference]: Without dead ends: 2433 [2022-02-15 11:36:53,845 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 [2022-02-15 11:36:53,850 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:53,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-02-15 11:36:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2433. [2022-02-15 11:36:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2432 states have (on average 3.4416118421052633) internal successors, (8370), 2432 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 8370 transitions. [2022-02-15 11:36:54,027 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 8370 transitions. Word has length 73 [2022-02-15 11:36:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:54,034 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 8370 transitions. [2022-02-15 11:36:54,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 8370 transitions. [2022-02-15 11:36:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 11:36:54,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:54,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:54,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 11:36:54,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1161938585, now seen corresponding path program 1 times [2022-02-15 11:36:54,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:54,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412364675] [2022-02-15 11:36:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:54,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:54,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:54,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412364675] [2022-02-15 11:36:54,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412364675] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:54,335 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:54,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 11:36:54,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215991783] [2022-02-15 11:36:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:54,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:36:54,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:54,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:36:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:54,338 INFO L87 Difference]: Start difference. First operand 2433 states and 8370 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:54,495 INFO L93 Difference]: Finished difference Result 2082 states and 7215 transitions. [2022-02-15 11:36:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 11:36:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-02-15 11:36:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:54,526 INFO L225 Difference]: With dead ends: 2082 [2022-02-15 11:36:54,526 INFO L226 Difference]: Without dead ends: 2082 [2022-02-15 11:36:54,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:36:54,527 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 78 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:54,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 325 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-02-15 11:36:54,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2022-02-15 11:36:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2081 states have (on average 3.467083133109082) internal successors, (7215), 2081 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 7215 transitions. [2022-02-15 11:36:54,642 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 7215 transitions. Word has length 73 [2022-02-15 11:36:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:54,644 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 7215 transitions. [2022-02-15 11:36:54,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 7215 transitions. [2022-02-15 11:36:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 11:36:54,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:54,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:54,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 11:36:54,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:54,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2128041119, now seen corresponding path program 2 times [2022-02-15 11:36:54,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:54,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333438271] [2022-02-15 11:36:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:54,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:54,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:54,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333438271] [2022-02-15 11:36:54,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333438271] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:54,873 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:54,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 11:36:54,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702466544] [2022-02-15 11:36:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:54,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 11:36:54,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:54,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 11:36:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:36:54,875 INFO L87 Difference]: Start difference. First operand 2082 states and 7215 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:55,086 INFO L93 Difference]: Finished difference Result 2202 states and 7637 transitions. [2022-02-15 11:36:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:36:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-02-15 11:36:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:55,104 INFO L225 Difference]: With dead ends: 2202 [2022-02-15 11:36:55,104 INFO L226 Difference]: Without dead ends: 2202 [2022-02-15 11:36:55,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-15 11:36:55,111 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 146 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:55,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 317 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-02-15 11:36:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2202. [2022-02-15 11:36:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.469786460699682) internal successors, (7637), 2201 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 7637 transitions. [2022-02-15 11:36:55,198 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 7637 transitions. Word has length 73 [2022-02-15 11:36:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:55,200 INFO L470 AbstractCegarLoop]: Abstraction has 2202 states and 7637 transitions. [2022-02-15 11:36:55,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 7637 transitions. [2022-02-15 11:36:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-15 11:36:55,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:55,209 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, 1, 1, 1, 1] [2022-02-15 11:36:55,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 11:36:55,210 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1214389757, now seen corresponding path program 3 times [2022-02-15 11:36:55,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:55,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223245257] [2022-02-15 11:36:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:55,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:55,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:55,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223245257] [2022-02-15 11:36:55,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223245257] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:55,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:55,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 11:36:55,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457475515] [2022-02-15 11:36:55,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:55,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 11:36:55,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 11:36:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:36:55,378 INFO L87 Difference]: Start difference. First operand 2202 states and 7637 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:55,567 INFO L93 Difference]: Finished difference Result 5976 states and 21356 transitions. [2022-02-15 11:36:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-15 11:36:55,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-02-15 11:36:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:55,586 INFO L225 Difference]: With dead ends: 5976 [2022-02-15 11:36:55,586 INFO L226 Difference]: Without dead ends: 2916 [2022-02-15 11:36:55,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:36:55,590 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 185 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:55,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 425 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-02-15 11:36:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2916. [2022-02-15 11:36:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 3.3759862778730705) internal successors, (9841), 2915 states have internal predecessors, (9841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 9841 transitions. [2022-02-15 11:36:55,677 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 9841 transitions. Word has length 73 [2022-02-15 11:36:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:55,677 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 9841 transitions. [2022-02-15 11:36:55,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 9841 transitions. [2022-02-15 11:36:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 11:36:55,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:55,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:55,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 11:36:55,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2143646398, now seen corresponding path program 1 times [2022-02-15 11:36:55,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:55,690 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444730267] [2022-02-15 11:36:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:55,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:55,844 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:55,844 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444730267] [2022-02-15 11:36:55,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444730267] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:55,844 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:55,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 11:36:55,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944858241] [2022-02-15 11:36:55,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:55,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 11:36:55,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:55,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 11:36:55,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-15 11:36:55,846 INFO L87 Difference]: Start difference. First operand 2916 states and 9841 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:56,003 INFO L93 Difference]: Finished difference Result 4153 states and 14208 transitions. [2022-02-15 11:36:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:36:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-15 11:36:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:56,026 INFO L225 Difference]: With dead ends: 4153 [2022-02-15 11:36:56,026 INFO L226 Difference]: Without dead ends: 3361 [2022-02-15 11:36:56,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-15 11:36:56,028 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 116 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:56,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 433 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2022-02-15 11:36:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 3301. [2022-02-15 11:36:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3301 states, 3300 states have (on average 3.3333333333333335) internal successors, (11000), 3300 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 11000 transitions. [2022-02-15 11:36:56,134 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 11000 transitions. Word has length 78 [2022-02-15 11:36:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:56,135 INFO L470 AbstractCegarLoop]: Abstraction has 3301 states and 11000 transitions. [2022-02-15 11:36:56,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 11000 transitions. [2022-02-15 11:36:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 11:36:56,147 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:56,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:56,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 11:36:56,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:56,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:56,149 INFO L85 PathProgramCache]: Analyzing trace with hash -334981784, now seen corresponding path program 2 times [2022-02-15 11:36:56,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:56,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736985114] [2022-02-15 11:36:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:56,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:56,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:56,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736985114] [2022-02-15 11:36:56,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736985114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:56,230 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:56,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 11:36:56,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410059423] [2022-02-15 11:36:56,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:56,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 11:36:56,231 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 11:36:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 11:36:56,232 INFO L87 Difference]: Start difference. First operand 3301 states and 11000 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:56,293 INFO L93 Difference]: Finished difference Result 4578 states and 15157 transitions. [2022-02-15 11:36:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 11:36:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-15 11:36:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:56,317 INFO L225 Difference]: With dead ends: 4578 [2022-02-15 11:36:56,318 INFO L226 Difference]: Without dead ends: 4578 [2022-02-15 11:36:56,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:56,319 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 103 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:56,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 206 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2022-02-15 11:36:56,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3805. [2022-02-15 11:36:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 3804 states have (on average 3.3254468980021032) internal successors, (12650), 3804 states have internal predecessors, (12650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 12650 transitions. [2022-02-15 11:36:56,487 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 12650 transitions. Word has length 78 [2022-02-15 11:36:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:56,487 INFO L470 AbstractCegarLoop]: Abstraction has 3805 states and 12650 transitions. [2022-02-15 11:36:56,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 12650 transitions. [2022-02-15 11:36:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 11:36:56,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:56,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:56,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 11:36:56,498 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:56,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:56,498 INFO L85 PathProgramCache]: Analyzing trace with hash -283982162, now seen corresponding path program 1 times [2022-02-15 11:36:56,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:56,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029841050] [2022-02-15 11:36:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:56,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:56,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:56,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029841050] [2022-02-15 11:36:56,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029841050] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:56,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642101214] [2022-02-15 11:36:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:56,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:56,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:56,587 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) [2022-02-15 11:36:56,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 11:36:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:56,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 11:36:56,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:56,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:56,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642101214] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:56,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:56,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-02-15 11:36:56,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323774712] [2022-02-15 11:36:56,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:56,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:36:56,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:56,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:36:56,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:56,987 INFO L87 Difference]: Start difference. First operand 3805 states and 12650 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:57,098 INFO L93 Difference]: Finished difference Result 6206 states and 20696 transitions. [2022-02-15 11:36:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 11:36:57,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-15 11:36:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:57,120 INFO L225 Difference]: With dead ends: 6206 [2022-02-15 11:36:57,120 INFO L226 Difference]: Without dead ends: 5216 [2022-02-15 11:36:57,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:36:57,121 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 139 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:57,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 464 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2022-02-15 11:36:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 3878. [2022-02-15 11:36:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 3.3164818158369873) internal successors, (12858), 3877 states have internal predecessors, (12858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 12858 transitions. [2022-02-15 11:36:57,301 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 12858 transitions. Word has length 78 [2022-02-15 11:36:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:57,302 INFO L470 AbstractCegarLoop]: Abstraction has 3878 states and 12858 transitions. [2022-02-15 11:36:57,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 12858 transitions. [2022-02-15 11:36:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-15 11:36:57,312 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:57,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:57,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:57,528 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1684952482, now seen corresponding path program 2 times [2022-02-15 11:36:57,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:57,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704410670] [2022-02-15 11:36:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:57,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:57,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:57,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704410670] [2022-02-15 11:36:57,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704410670] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:57,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:57,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 11:36:57,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76200447] [2022-02-15 11:36:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:57,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 11:36:57,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 11:36:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 11:36:57,595 INFO L87 Difference]: Start difference. First operand 3878 states and 12858 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:57,661 INFO L93 Difference]: Finished difference Result 5199 states and 17115 transitions. [2022-02-15 11:36:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-15 11:36:57,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-15 11:36:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:57,682 INFO L225 Difference]: With dead ends: 5199 [2022-02-15 11:36:57,682 INFO L226 Difference]: Without dead ends: 5199 [2022-02-15 11:36:57,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:57,683 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 138 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:57,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 198 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:36:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2022-02-15 11:36:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 4416. [2022-02-15 11:36:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 4415 states have (on average 3.312797281993205) internal successors, (14626), 4415 states have internal predecessors, (14626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 14626 transitions. [2022-02-15 11:36:57,812 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 14626 transitions. Word has length 78 [2022-02-15 11:36:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:57,813 INFO L470 AbstractCegarLoop]: Abstraction has 4416 states and 14626 transitions. [2022-02-15 11:36:57,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 14626 transitions. [2022-02-15 11:36:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:36:57,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:57,824 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:57,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 11:36:57,825 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1220622473, now seen corresponding path program 1 times [2022-02-15 11:36:57,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:57,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722844625] [2022-02-15 11:36:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:57,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:57,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:57,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722844625] [2022-02-15 11:36:57,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722844625] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:57,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160155104] [2022-02-15 11:36:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:57,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:57,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:57,918 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) [2022-02-15 11:36:57,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 11:36:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:58,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 11:36:58,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:36:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:58,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:36:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:58,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160155104] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:36:58,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:36:58,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-15 11:36:58,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530741356] [2022-02-15 11:36:58,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:36:58,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 11:36:58,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 11:36:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-15 11:36:58,438 INFO L87 Difference]: Start difference. First operand 4416 states and 14626 transitions. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:58,905 INFO L93 Difference]: Finished difference Result 11090 states and 36939 transitions. [2022-02-15 11:36:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 11:36:58,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-02-15 11:36:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:58,935 INFO L225 Difference]: With dead ends: 11090 [2022-02-15 11:36:58,935 INFO L226 Difference]: Without dead ends: 7556 [2022-02-15 11:36:58,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-02-15 11:36:58,936 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 463 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:58,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1384 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:36:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7556 states. [2022-02-15 11:36:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7556 to 5006. [2022-02-15 11:36:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5005 states have (on average 3.3226773226773227) internal successors, (16630), 5005 states have internal predecessors, (16630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 16630 transitions. [2022-02-15 11:36:59,090 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 16630 transitions. Word has length 83 [2022-02-15 11:36:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:59,090 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 16630 transitions. [2022-02-15 11:36:59,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 16630 transitions. [2022-02-15 11:36:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:36:59,103 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:59,103 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:59,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 11:36:59,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-02-15 11:36:59,328 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash 361368679, now seen corresponding path program 2 times [2022-02-15 11:36:59,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:59,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578439653] [2022-02-15 11:36:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:59,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 11:36:59,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:59,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578439653] [2022-02-15 11:36:59,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578439653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:36:59,464 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:36:59,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 11:36:59,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183274146] [2022-02-15 11:36:59,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:36:59,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 11:36:59,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:36:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 11:36:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 11:36:59,465 INFO L87 Difference]: Start difference. First operand 5006 states and 16630 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:36:59,559 INFO L93 Difference]: Finished difference Result 7366 states and 24339 transitions. [2022-02-15 11:36:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 11:36:59,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-02-15 11:36:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:36:59,585 INFO L225 Difference]: With dead ends: 7366 [2022-02-15 11:36:59,585 INFO L226 Difference]: Without dead ends: 7186 [2022-02-15 11:36:59,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:36:59,586 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 124 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:36:59,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 288 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:36:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2022-02-15 11:36:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 5496. [2022-02-15 11:36:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5495 states have (on average 3.337761601455869) internal successors, (18341), 5495 states have internal predecessors, (18341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 18341 transitions. [2022-02-15 11:36:59,731 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 18341 transitions. Word has length 83 [2022-02-15 11:36:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:36:59,731 INFO L470 AbstractCegarLoop]: Abstraction has 5496 states and 18341 transitions. [2022-02-15 11:36:59,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:36:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 18341 transitions. [2022-02-15 11:36:59,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:36:59,745 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:36:59,745 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:36:59,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 11:36:59,745 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:36:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:36:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1739325417, now seen corresponding path program 3 times [2022-02-15 11:36:59,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:36:59,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138154412] [2022-02-15 11:36:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:36:59,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:36:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:36:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:36:59,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:36:59,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138154412] [2022-02-15 11:36:59,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138154412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:36:59,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301848848] [2022-02-15 11:36:59,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:36:59,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:36:59,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:36:59,837 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) [2022-02-15 11:36:59,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 11:36:59,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 11:36:59,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:36:59,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-15 11:36:59,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:00,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:00,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301848848] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:00,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 11:37:00,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2022-02-15 11:37:00,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511911408] [2022-02-15 11:37:00,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:00,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 11:37:00,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 11:37:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-15 11:37:00,247 INFO L87 Difference]: Start difference. First operand 5496 states and 18341 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:00,382 INFO L93 Difference]: Finished difference Result 6740 states and 22235 transitions. [2022-02-15 11:37:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:37:00,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-02-15 11:37:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:00,403 INFO L225 Difference]: With dead ends: 6740 [2022-02-15 11:37:00,403 INFO L226 Difference]: Without dead ends: 6611 [2022-02-15 11:37:00,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-15 11:37:00,404 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 143 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:00,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 303 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:37:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6611 states. [2022-02-15 11:37:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6611 to 5016. [2022-02-15 11:37:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5016 states, 5015 states have (on average 3.3218344965104687) internal successors, (16659), 5015 states have internal predecessors, (16659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5016 states to 5016 states and 16659 transitions. [2022-02-15 11:37:00,518 INFO L78 Accepts]: Start accepts. Automaton has 5016 states and 16659 transitions. Word has length 83 [2022-02-15 11:37:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:00,519 INFO L470 AbstractCegarLoop]: Abstraction has 5016 states and 16659 transitions. [2022-02-15 11:37:00,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5016 states and 16659 transitions. [2022-02-15 11:37:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:37:00,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:00,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:00,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:00,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:00,752 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1951495229, now seen corresponding path program 4 times [2022-02-15 11:37:00,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:00,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562363464] [2022-02-15 11:37:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:00,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 11:37:00,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:00,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562363464] [2022-02-15 11:37:00,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562363464] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:00,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:37:00,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 11:37:00,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11122265] [2022-02-15 11:37:00,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:00,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-15 11:37:00,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-15 11:37:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-15 11:37:00,835 INFO L87 Difference]: Start difference. First operand 5016 states and 16659 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:00,913 INFO L93 Difference]: Finished difference Result 5817 states and 18926 transitions. [2022-02-15 11:37:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 11:37:00,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-02-15 11:37:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:00,932 INFO L225 Difference]: With dead ends: 5817 [2022-02-15 11:37:00,933 INFO L226 Difference]: Without dead ends: 5577 [2022-02-15 11:37:00,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:37:00,934 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 108 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:00,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 317 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:37:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2022-02-15 11:37:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 4866. [2022-02-15 11:37:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 4865 states have (on average 3.322918807810894) internal successors, (16166), 4865 states have internal predecessors, (16166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 16166 transitions. [2022-02-15 11:37:01,080 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 16166 transitions. Word has length 83 [2022-02-15 11:37:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:01,080 INFO L470 AbstractCegarLoop]: Abstraction has 4866 states and 16166 transitions. [2022-02-15 11:37:01,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 16166 transitions. [2022-02-15 11:37:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:37:01,089 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:01,089 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:01,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 11:37:01,090 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash -582144969, now seen corresponding path program 1 times [2022-02-15 11:37:01,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:01,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145109919] [2022-02-15 11:37:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:01,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:01,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:01,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145109919] [2022-02-15 11:37:01,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145109919] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:01,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871708323] [2022-02-15 11:37:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:01,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:01,192 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) [2022-02-15 11:37:01,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 11:37:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:01,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-15 11:37:01,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:01,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:01,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871708323] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:37:01,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:37:01,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-02-15 11:37:01,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951779564] [2022-02-15 11:37:01,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:37:01,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-15 11:37:01,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-15 11:37:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-15 11:37:01,675 INFO L87 Difference]: Start difference. First operand 4866 states and 16166 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:02,045 INFO L93 Difference]: Finished difference Result 10532 states and 35232 transitions. [2022-02-15 11:37:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-15 11:37:02,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-02-15 11:37:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:02,075 INFO L225 Difference]: With dead ends: 10532 [2022-02-15 11:37:02,075 INFO L226 Difference]: Without dead ends: 7268 [2022-02-15 11:37:02,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2022-02-15 11:37:02,077 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 522 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:02,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1184 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:37:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7268 states. [2022-02-15 11:37:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7268 to 7092. [2022-02-15 11:37:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7091 states have (on average 3.2795092370610632) internal successors, (23255), 7091 states have internal predecessors, (23255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 23255 transitions. [2022-02-15 11:37:02,315 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 23255 transitions. Word has length 83 [2022-02-15 11:37:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:02,316 INFO L470 AbstractCegarLoop]: Abstraction has 7092 states and 23255 transitions. [2022-02-15 11:37:02,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 23255 transitions. [2022-02-15 11:37:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 11:37:02,332 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:02,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:02,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:02,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:02,547 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:02,548 INFO L85 PathProgramCache]: Analyzing trace with hash 374845067, now seen corresponding path program 5 times [2022-02-15 11:37:02,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:02,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859832970] [2022-02-15 11:37:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:02,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:37:02,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:02,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859832970] [2022-02-15 11:37:02,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859832970] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:02,657 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:37:02,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 11:37:02,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391693438] [2022-02-15 11:37:02,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:02,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:37:02,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:37:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:37:02,658 INFO L87 Difference]: Start difference. First operand 7092 states and 23255 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:02,841 INFO L93 Difference]: Finished difference Result 10420 states and 33617 transitions. [2022-02-15 11:37:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:37:02,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-02-15 11:37:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:02,872 INFO L225 Difference]: With dead ends: 10420 [2022-02-15 11:37:02,872 INFO L226 Difference]: Without dead ends: 10291 [2022-02-15 11:37:02,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 11:37:02,873 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 147 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:02,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 398 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:37:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states. [2022-02-15 11:37:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10291 to 6413. [2022-02-15 11:37:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6413 states, 6412 states have (on average 3.2446974422956956) internal successors, (20805), 6412 states have internal predecessors, (20805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 20805 transitions. [2022-02-15 11:37:03,038 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 20805 transitions. Word has length 83 [2022-02-15 11:37:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:03,039 INFO L470 AbstractCegarLoop]: Abstraction has 6413 states and 20805 transitions. [2022-02-15 11:37:03,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 20805 transitions. [2022-02-15 11:37:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 11:37:03,057 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:03,057 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:03,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 11:37:03,058 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:03,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -698930520, now seen corresponding path program 6 times [2022-02-15 11:37:03,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:03,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845101025] [2022-02-15 11:37:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:03,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:37:03,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:03,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845101025] [2022-02-15 11:37:03,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845101025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:03,101 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:37:03,101 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 11:37:03,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110941918] [2022-02-15 11:37:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:03,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 11:37:03,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 11:37:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:37:03,103 INFO L87 Difference]: Start difference. First operand 6413 states and 20805 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:03,252 INFO L93 Difference]: Finished difference Result 10368 states and 33077 transitions. [2022-02-15 11:37:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 11:37:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-02-15 11:37:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:03,285 INFO L225 Difference]: With dead ends: 10368 [2022-02-15 11:37:03,286 INFO L226 Difference]: Without dead ends: 10368 [2022-02-15 11:37:03,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:37:03,288 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 98 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:03,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 365 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:37:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2022-02-15 11:37:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 8124. [2022-02-15 11:37:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8124 states, 8123 states have (on average 3.1903237720054167) internal successors, (25915), 8123 states have internal predecessors, (25915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8124 states to 8124 states and 25915 transitions. [2022-02-15 11:37:03,483 INFO L78 Accepts]: Start accepts. Automaton has 8124 states and 25915 transitions. Word has length 88 [2022-02-15 11:37:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:03,483 INFO L470 AbstractCegarLoop]: Abstraction has 8124 states and 25915 transitions. [2022-02-15 11:37:03,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8124 states and 25915 transitions. [2022-02-15 11:37:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-15 11:37:03,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:03,500 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:03,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 11:37:03,500 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash 243183266, now seen corresponding path program 2 times [2022-02-15 11:37:03,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:03,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488161978] [2022-02-15 11:37:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:03,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:37:03,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:03,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488161978] [2022-02-15 11:37:03,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488161978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:37:03,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:37:03,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 11:37:03,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432938296] [2022-02-15 11:37:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:37:03,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 11:37:03,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 11:37:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:37:03,597 INFO L87 Difference]: Start difference. First operand 8124 states and 25915 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:03,674 INFO L93 Difference]: Finished difference Result 9060 states and 27831 transitions. [2022-02-15 11:37:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 11:37:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-02-15 11:37:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:03,706 INFO L225 Difference]: With dead ends: 9060 [2022-02-15 11:37:03,706 INFO L226 Difference]: Without dead ends: 9060 [2022-02-15 11:37:03,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:37:03,707 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 87 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:03,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 292 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:37:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9060 states. [2022-02-15 11:37:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9060 to 8130. [2022-02-15 11:37:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 8129 states have (on average 3.0682740804527002) internal successors, (24942), 8129 states have internal predecessors, (24942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 24942 transitions. [2022-02-15 11:37:03,911 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 24942 transitions. Word has length 88 [2022-02-15 11:37:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:03,912 INFO L470 AbstractCegarLoop]: Abstraction has 8130 states and 24942 transitions. [2022-02-15 11:37:03,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 24942 transitions. [2022-02-15 11:37:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 11:37:03,926 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:03,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:03,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 11:37:03,927 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash 564604481, now seen corresponding path program 1 times [2022-02-15 11:37:03,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:03,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346524191] [2022-02-15 11:37:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:03,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:04,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:04,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346524191] [2022-02-15 11:37:04,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346524191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:04,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471228149] [2022-02-15 11:37:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:04,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:04,020 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) [2022-02-15 11:37:04,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 11:37:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:04,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-15 11:37:04,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:04,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:04,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471228149] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:37:04,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:37:04,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-02-15 11:37:04,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450271619] [2022-02-15 11:37:04,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:37:04,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-15 11:37:04,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:04,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-15 11:37:04,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-15 11:37:04,572 INFO L87 Difference]: Start difference. First operand 8130 states and 24942 transitions. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:05,214 INFO L93 Difference]: Finished difference Result 16062 states and 49803 transitions. [2022-02-15 11:37:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 11:37:05,215 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-15 11:37:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:05,245 INFO L225 Difference]: With dead ends: 16062 [2022-02-15 11:37:05,245 INFO L226 Difference]: Without dead ends: 12012 [2022-02-15 11:37:05,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-02-15 11:37:05,246 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 543 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:05,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 1737 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 11:37:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12012 states. [2022-02-15 11:37:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12012 to 7134. [2022-02-15 11:37:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7134 states, 7133 states have (on average 3.075704472171597) internal successors, (21939), 7133 states have internal predecessors, (21939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 21939 transitions. [2022-02-15 11:37:05,441 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 21939 transitions. Word has length 93 [2022-02-15 11:37:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:05,441 INFO L470 AbstractCegarLoop]: Abstraction has 7134 states and 21939 transitions. [2022-02-15 11:37:05,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 21939 transitions. [2022-02-15 11:37:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 11:37:05,454 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:05,455 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:05,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:05,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-15 11:37:05,676 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -248136285, now seen corresponding path program 2 times [2022-02-15 11:37:05,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:05,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110110049] [2022-02-15 11:37:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:05,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:05,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:05,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110110049] [2022-02-15 11:37:05,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110110049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:05,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513072834] [2022-02-15 11:37:05,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:37:05,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:05,840 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) [2022-02-15 11:37:05,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 11:37:05,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:37:05,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:05,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-15 11:37:05,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:06,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:06,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513072834] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:37:06,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:37:06,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-02-15 11:37:06,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247688919] [2022-02-15 11:37:06,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:37:06,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 11:37:06,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:06,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 11:37:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-02-15 11:37:06,403 INFO L87 Difference]: Start difference. First operand 7134 states and 21939 transitions. Second operand has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:07,518 INFO L93 Difference]: Finished difference Result 15708 states and 48326 transitions. [2022-02-15 11:37:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 11:37:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-15 11:37:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:07,549 INFO L225 Difference]: With dead ends: 15708 [2022-02-15 11:37:07,549 INFO L226 Difference]: Without dead ends: 13440 [2022-02-15 11:37:07,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=1465, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 11:37:07,550 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 573 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:07,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1810 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:37:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2022-02-15 11:37:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 12110. [2022-02-15 11:37:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12110 states, 12109 states have (on average 3.0385663556032703) internal successors, (36794), 12109 states have internal predecessors, (36794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12110 states to 12110 states and 36794 transitions. [2022-02-15 11:37:07,817 INFO L78 Accepts]: Start accepts. Automaton has 12110 states and 36794 transitions. Word has length 93 [2022-02-15 11:37:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:07,818 INFO L470 AbstractCegarLoop]: Abstraction has 12110 states and 36794 transitions. [2022-02-15 11:37:07,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 12110 states and 36794 transitions. [2022-02-15 11:37:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-15 11:37:07,842 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:37:07,842 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:37:07,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:08,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-15 11:37:08,062 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-15 11:37:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:37:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 246303109, now seen corresponding path program 3 times [2022-02-15 11:37:08,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:37:08,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141798745] [2022-02-15 11:37:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:37:08,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:37:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:37:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:08,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:37:08,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141798745] [2022-02-15 11:37:08,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141798745] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:37:08,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30393656] [2022-02-15 11:37:08,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:37:08,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:37:08,227 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) [2022-02-15 11:37:08,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 11:37:08,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 11:37:08,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:37:08,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-15 11:37:08,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:37:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:08,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:37:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:37:08,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30393656] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:37:08,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:37:08,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2022-02-15 11:37:08,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803514371] [2022-02-15 11:37:08,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:37:08,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 11:37:08,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:37:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 11:37:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-02-15 11:37:08,847 INFO L87 Difference]: Start difference. First operand 12110 states and 36794 transitions. Second operand has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:37:09,900 INFO L93 Difference]: Finished difference Result 16310 states and 48877 transitions. [2022-02-15 11:37:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 11:37:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-02-15 11:37:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:37:09,901 INFO L225 Difference]: With dead ends: 16310 [2022-02-15 11:37:09,901 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 11:37:09,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=521, Invalid=1641, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 11:37:09,902 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 559 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 11:37:09,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 1933 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 11:37:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 11:37:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 11:37:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 11:37:09,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2022-02-15 11:37:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:37:09,904 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 11:37:09,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:37:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 11:37:09,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 11:37:09,906 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-02-15 11:37:09,906 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-15 11:37:09,906 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-15 11:37:09,907 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-15 11:37:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 11:37:10,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:37:10,118 INFO L732 BasicCegarLoop]: Path program histogram: [6, 3, 3, 2, 2, 2, 1] [2022-02-15 11:37:10,119 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 11:37:10,119 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 11:37:10,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 11:37:10 BasicIcfg [2022-02-15 11:37:10,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 11:37:10,121 INFO L158 Benchmark]: Toolchain (without parser) took 17707.41ms. Allocated memory was 194.0MB in the beginning and 775.9MB in the end (delta: 582.0MB). Free memory was 136.3MB in the beginning and 505.0MB in the end (delta: -368.7MB). Peak memory consumption was 213.9MB. Max. memory is 8.0GB. [2022-02-15 11:37:10,122 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory was 153.2MB in the beginning and 153.1MB in the end (delta: 66.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 11:37:10,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.86ms. Allocated memory is still 194.0MB. Free memory was 136.1MB in the beginning and 161.9MB in the end (delta: -25.8MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. [2022-02-15 11:37:10,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.59ms. Allocated memory is still 194.0MB. Free memory was 161.9MB in the beginning and 160.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 11:37:10,122 INFO L158 Benchmark]: Boogie Preprocessor took 25.60ms. Allocated memory is still 194.0MB. Free memory was 160.4MB in the beginning and 159.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 11:37:10,122 INFO L158 Benchmark]: RCFGBuilder took 394.91ms. Allocated memory is still 194.0MB. Free memory was 159.0MB in the beginning and 145.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-15 11:37:10,123 INFO L158 Benchmark]: TraceAbstraction took 17024.00ms. Allocated memory was 194.0MB in the beginning and 775.9MB in the end (delta: 582.0MB). Free memory was 145.4MB in the beginning and 505.0MB in the end (delta: -359.6MB). Peak memory consumption was 223.5MB. Max. memory is 8.0GB. [2022-02-15 11:37:10,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory was 153.2MB in the beginning and 153.1MB in the end (delta: 66.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.86ms. Allocated memory is still 194.0MB. Free memory was 136.1MB in the beginning and 161.9MB in the end (delta: -25.8MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.59ms. Allocated memory is still 194.0MB. Free memory was 161.9MB in the beginning and 160.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.60ms. Allocated memory is still 194.0MB. Free memory was 160.4MB in the beginning and 159.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 394.91ms. Allocated memory is still 194.0MB. Free memory was 159.0MB in the beginning and 145.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 17024.00ms. Allocated memory was 194.0MB in the beginning and 775.9MB in the end (delta: 582.0MB). Free memory was 145.4MB in the beginning and 505.0MB in the end (delta: -359.6MB). Peak memory consumption was 223.5MB. 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 - PositiveResult [Line: 116]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 16.9s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.3s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4272 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4272 mSDsluCounter, 12459 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10547 mSDsCounter, 359 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4069 IncrementalHoareTripleChecker+Invalid, 4428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 359 mSolverCounterUnsat, 2637 mSDtfsCounter, 4069 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1446 GetRequests, 1202 SyntacticMatches, 9 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12110occurred in iteration=18, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 19 MinimizatonAttempts, 22936 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 2163 NumberOfCodeBlocks, 2163 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2736 ConstructedInterpolants, 0 QuantifiedInterpolants, 7018 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1513 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 33 InterpolantComputations, 13 PerfectInterpolantSequences, 136/218 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 11:37:10,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...