/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:01:19,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:01:19,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:01:19,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:01:19,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:01:19,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:01:19,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:01:19,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:01:19,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:01:19,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:01:19,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:01:19,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:01:19,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:01:19,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:01:19,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:01:19,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:01:19,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:01:19,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:01:19,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:01:19,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:01:19,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:01:19,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:01:19,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:01:19,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:01:19,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 18:01:19,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 18:01:19,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 18:01:19,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 18:01:19,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 18:01:19,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 18:01:19,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 18:01:19,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 18:01:19,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 18:01:19,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:01:19,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:01:19,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:01:19,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 18:01:19,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:01:19,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:01:19,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:01:19,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:01:19,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:01:19,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:01:19,871 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:01:19,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:01:19,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:01:19,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:01:19,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:01:19,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:01:19,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:01:19,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:01:19,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:01:19,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:01:19,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:01:19,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:01:19,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:01:19,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:01:19,875 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:01:20,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:01:20,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:01:20,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:01:20,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:01:20,113 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:01:20,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-03-15 18:01:20,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd70a961/b3d2b8f2b042471f9f6607efbada1408/FLAG617725450 [2022-03-15 18:01:20,652 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:01:20,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-03-15 18:01:20,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd70a961/b3d2b8f2b042471f9f6607efbada1408/FLAG617725450 [2022-03-15 18:01:20,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd70a961/b3d2b8f2b042471f9f6607efbada1408 [2022-03-15 18:01:20,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:01:20,966 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:01:20,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:01:20,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:01:20,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:01:20,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:01:20" (1/1) ... [2022-03-15 18:01:20,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e8f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:20, skipping insertion in model container [2022-03-15 18:01:20,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:01:20" (1/1) ... [2022-03-15 18:01:20,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:01:21,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:01:21,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-03-15 18:01:21,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:01:21,406 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:01:21,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-03-15 18:01:21,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:01:21,530 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:01:21,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21 WrapperNode [2022-03-15 18:01:21,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:01:21,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:01:21,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:01:21,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:01:21,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,576 INFO L137 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2022-03-15 18:01:21,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:01:21,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:01:21,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:01:21,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:01:21,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:01:21,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:01:21,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:01:21,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:01:21,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (1/1) ... [2022-03-15 18:01:21,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:01:21,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:21,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 18:01:21,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:01:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-03-15 18:01:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-03-15 18:01:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:01:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:01:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:01:21,678 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 18:01:21,802 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:01:21,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:01:22,001 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:01:22,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:01:22,007 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 18:01:22,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:01:22 BoogieIcfgContainer [2022-03-15 18:01:22,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:01:22,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:01:22,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:01:22,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:01:22,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:01:20" (1/3) ... [2022-03-15 18:01:22,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@feb9bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:01:22, skipping insertion in model container [2022-03-15 18:01:22,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:01:21" (2/3) ... [2022-03-15 18:01:22,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@feb9bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:01:22, skipping insertion in model container [2022-03-15 18:01:22,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:01:22" (3/3) ... [2022-03-15 18:01:22,016 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-03-15 18:01:22,020 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:01:22,021 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:01:22,021 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 18:01:22,021 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:01:22,066 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,066 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,066 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,066 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,067 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,067 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,067 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,067 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,067 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,068 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,068 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,068 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,068 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,068 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,068 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,069 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,069 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,069 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,070 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,070 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,070 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,070 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,070 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,070 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,071 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,072 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,072 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,072 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,072 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,072 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,073 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,074 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,074 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,074 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,077 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,078 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,079 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:01:22,082 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 18:01:22,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:01:22,134 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:01:22,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-15 18:01:22,145 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:01:22,151 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 97 transitions, 202 flow [2022-03-15 18:01:22,153 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 97 transitions, 202 flow [2022-03-15 18:01:22,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 202 flow [2022-03-15 18:01:22,193 INFO L129 PetriNetUnfolder]: 7/96 cut-off events. [2022-03-15 18:01:22,193 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-03-15 18:01:22,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 7/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-03-15 18:01:22,200 INFO L116 LiptonReduction]: Number of co-enabled transitions 722 [2022-03-15 18:01:24,478 INFO L131 LiptonReduction]: Checked pairs total: 934 [2022-03-15 18:01:24,478 INFO L133 LiptonReduction]: Total number of compositions: 93 [2022-03-15 18:01:24,484 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2022-03-15 18:01:24,505 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:01:24,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:24,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:24,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:24,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1792519753, now seen corresponding path program 1 times [2022-03-15 18:01:24,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:24,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122056833] [2022-03-15 18:01:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:24,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:01:24,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:24,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122056833] [2022-03-15 18:01:24,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122056833] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:01:24,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:01:24,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:01:24,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1758149664] [2022-03-15 18:01:24,734 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:24,739 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:24,751 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2022-03-15 18:01:24,752 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:24,807 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [168#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:24,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:01:24,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:01:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 18:01:24,838 INFO L87 Difference]: Start difference. First operand has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 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 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:24,892 INFO L93 Difference]: Finished difference Result 58 states and 112 transitions. [2022-03-15 18:01:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:01:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-03-15 18:01:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:24,901 INFO L225 Difference]: With dead ends: 58 [2022-03-15 18:01:24,902 INFO L226 Difference]: Without dead ends: 58 [2022-03-15 18:01:24,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 18:01:24,908 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6 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 [2022-03-15 18:01:24,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 6 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-03-15 18:01:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-03-15 18:01:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 57 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 112 transitions. [2022-03-15 18:01:24,950 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 112 transitions. Word has length 8 [2022-03-15 18:01:24,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:24,950 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 112 transitions. [2022-03-15 18:01:24,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 112 transitions. [2022-03-15 18:01:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 18:01:24,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:24,952 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:24,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:01:24,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:24,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1371117449, now seen corresponding path program 1 times [2022-03-15 18:01:24,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:24,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271682437] [2022-03-15 18:01:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 18:01:25,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:25,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271682437] [2022-03-15 18:01:25,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271682437] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:01:25,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:01:25,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:01:25,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [883688105] [2022-03-15 18:01:25,071 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:25,073 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:25,077 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 46 transitions. [2022-03-15 18:01:25,078 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:25,180 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:25,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:01:25,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:01:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:01:25,183 INFO L87 Difference]: Start difference. First operand 58 states and 112 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:25,217 INFO L93 Difference]: Finished difference Result 94 states and 184 transitions. [2022-03-15 18:01:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:01:25,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 18:01:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:25,221 INFO L225 Difference]: With dead ends: 94 [2022-03-15 18:01:25,221 INFO L226 Difference]: Without dead ends: 94 [2022-03-15 18:01:25,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:01:25,223 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:25,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-15 18:01:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2022-03-15 18:01:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.9696969696969697) internal successors, (130), 66 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 130 transitions. [2022-03-15 18:01:25,239 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 130 transitions. Word has length 14 [2022-03-15 18:01:25,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:25,239 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 130 transitions. [2022-03-15 18:01:25,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 130 transitions. [2022-03-15 18:01:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 18:01:25,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:25,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:25,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:01:25,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1690602710, now seen corresponding path program 1 times [2022-03-15 18:01:25,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:25,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678151332] [2022-03-15 18:01:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 18:01:25,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:25,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678151332] [2022-03-15 18:01:25,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678151332] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:25,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381881790] [2022-03-15 18:01:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:25,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:25,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:25,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:25,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 18:01:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:25,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:25,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:01:25,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 18:01:25,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381881790] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:25,586 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:25,586 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-03-15 18:01:25,586 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2120631301] [2022-03-15 18:01:25,586 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:25,588 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:25,592 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 44 transitions. [2022-03-15 18:01:25,592 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:25,678 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:25,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 18:01:25,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:25,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 18:01:25,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-15 18:01:25,679 INFO L87 Difference]: Start difference. First operand 67 states and 130 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:25,708 INFO L93 Difference]: Finished difference Result 130 states and 256 transitions. [2022-03-15 18:01:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 18:01:25,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 18:01:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:25,709 INFO L225 Difference]: With dead ends: 130 [2022-03-15 18:01:25,709 INFO L226 Difference]: Without dead ends: 130 [2022-03-15 18:01:25,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-15 18:01:25,710 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:25,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 7 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-03-15 18:01:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2022-03-15 18:01:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.9803921568627452) internal successors, (202), 102 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 202 transitions. [2022-03-15 18:01:25,719 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 202 transitions. Word has length 18 [2022-03-15 18:01:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:25,720 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 202 transitions. [2022-03-15 18:01:25,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 202 transitions. [2022-03-15 18:01:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 18:01:25,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:25,721 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:25,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:25,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:25,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:25,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1395955275, now seen corresponding path program 2 times [2022-03-15 18:01:25,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:25,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820780866] [2022-03-15 18:01:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:26,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:26,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820780866] [2022-03-15 18:01:26,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820780866] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:26,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946640985] [2022-03-15 18:01:26,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:01:26,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:26,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:26,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:26,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 18:01:26,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:01:26,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:26,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:26,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:26,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:26,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946640985] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:26,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:26,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-03-15 18:01:26,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [505627106] [2022-03-15 18:01:26,265 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:26,269 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:26,275 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2022-03-15 18:01:26,275 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:26,403 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1127#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:26,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:01:26,404 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:01:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:01:26,405 INFO L87 Difference]: Start difference. First operand 103 states and 202 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:26,471 INFO L93 Difference]: Finished difference Result 169 states and 334 transitions. [2022-03-15 18:01:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 18:01:26,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 18:01:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:26,474 INFO L225 Difference]: With dead ends: 169 [2022-03-15 18:01:26,474 INFO L226 Difference]: Without dead ends: 169 [2022-03-15 18:01:26,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:01:26,477 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:26,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 10 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-03-15 18:01:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-03-15 18:01:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.9880952380952381) internal successors, (334), 168 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 334 transitions. [2022-03-15 18:01:26,501 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 334 transitions. Word has length 22 [2022-03-15 18:01:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:26,501 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 334 transitions. [2022-03-15 18:01:26,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 334 transitions. [2022-03-15 18:01:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 18:01:26,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:26,503 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:26,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:26,703 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,SelfDestructingSolverStorable3 [2022-03-15 18:01:26,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1189433227, now seen corresponding path program 3 times [2022-03-15 18:01:26,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:26,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795763179] [2022-03-15 18:01:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:26,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:26,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795763179] [2022-03-15 18:01:26,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795763179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:26,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567309935] [2022-03-15 18:01:26,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:01:26,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:26,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:26,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:26,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 18:01:26,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:01:26,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:26,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:26,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 18:01:27,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-15 18:01:27,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567309935] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:27,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:27,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-03-15 18:01:27,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [183745610] [2022-03-15 18:01:27,085 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:27,090 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:27,100 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 74 transitions. [2022-03-15 18:01:27,100 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:27,234 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1839#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:27,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:01:27,234 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:01:27,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-03-15 18:01:27,235 INFO L87 Difference]: Start difference. First operand 169 states and 334 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:27,305 INFO L93 Difference]: Finished difference Result 235 states and 466 transitions. [2022-03-15 18:01:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 18:01:27,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-15 18:01:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:27,307 INFO L225 Difference]: With dead ends: 235 [2022-03-15 18:01:27,307 INFO L226 Difference]: Without dead ends: 235 [2022-03-15 18:01:27,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-03-15 18:01:27,308 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 73 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:27,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 15 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-15 18:01:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2022-03-15 18:01:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.9914529914529915) internal successors, (466), 234 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 466 transitions. [2022-03-15 18:01:27,317 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 466 transitions. Word has length 28 [2022-03-15 18:01:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:27,317 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 466 transitions. [2022-03-15 18:01:27,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 466 transitions. [2022-03-15 18:01:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 18:01:27,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:27,320 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:27,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:27,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:27,545 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1358305483, now seen corresponding path program 4 times [2022-03-15 18:01:27,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:27,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516078601] [2022-03-15 18:01:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:27,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:27,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:27,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516078601] [2022-03-15 18:01:27,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516078601] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:27,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379075022] [2022-03-15 18:01:27,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:01:27,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:27,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:27,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:27,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 18:01:27,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:01:27,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:27,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:01:27,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:27,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:27,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379075022] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:27,918 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:27,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 18:01:27,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [374422528] [2022-03-15 18:01:27,919 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:27,924 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:27,940 INFO L252 McrAutomatonBuilder]: Finished intersection with 64 states and 92 transitions. [2022-03-15 18:01:27,940 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:28,113 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2690#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:28,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:01:28,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:01:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 18:01:28,114 INFO L87 Difference]: Start difference. First operand 235 states and 466 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:28,228 INFO L93 Difference]: Finished difference Result 301 states and 598 transitions. [2022-03-15 18:01:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 18:01:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 18:01:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:28,230 INFO L225 Difference]: With dead ends: 301 [2022-03-15 18:01:28,230 INFO L226 Difference]: Without dead ends: 301 [2022-03-15 18:01:28,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 18:01:28,231 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 98 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:28,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 19 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-03-15 18:01:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-03-15 18:01:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.9933333333333334) internal successors, (598), 300 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 598 transitions. [2022-03-15 18:01:28,252 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 598 transitions. Word has length 34 [2022-03-15 18:01:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 598 transitions. [2022-03-15 18:01:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 598 transitions. [2022-03-15 18:01:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-15 18:01:28,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:28,255 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:28,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-15 18:01:28,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:28,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1927613941, now seen corresponding path program 5 times [2022-03-15 18:01:28,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:28,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689437786] [2022-03-15 18:01:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:28,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:28,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689437786] [2022-03-15 18:01:28,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689437786] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:28,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314221710] [2022-03-15 18:01:28,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:01:28,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:28,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:28,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:28,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 18:01:28,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-03-15 18:01:28,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:28,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:28,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-03-15 18:01:28,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-03-15 18:01:28,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314221710] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:28,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:28,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-03-15 18:01:28,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [143097887] [2022-03-15 18:01:28,893 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:28,902 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:28,925 INFO L252 McrAutomatonBuilder]: Finished intersection with 76 states and 110 transitions. [2022-03-15 18:01:28,925 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:29,116 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3914#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:29,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:01:29,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:01:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:01:29,118 INFO L87 Difference]: Start difference. First operand 301 states and 598 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:29,215 INFO L93 Difference]: Finished difference Result 367 states and 730 transitions. [2022-03-15 18:01:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 18:01:29,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-03-15 18:01:29,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:29,217 INFO L225 Difference]: With dead ends: 367 [2022-03-15 18:01:29,218 INFO L226 Difference]: Without dead ends: 367 [2022-03-15 18:01:29,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-03-15 18:01:29,218 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 120 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:29,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 25 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-03-15 18:01:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-03-15 18:01:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.994535519125683) internal successors, (730), 366 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 730 transitions. [2022-03-15 18:01:29,227 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 730 transitions. Word has length 40 [2022-03-15 18:01:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:29,227 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 730 transitions. [2022-03-15 18:01:29,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 730 transitions. [2022-03-15 18:01:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-15 18:01:29,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:29,229 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:29,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:29,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:29,445 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2146968757, now seen corresponding path program 6 times [2022-03-15 18:01:29,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:29,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179517788] [2022-03-15 18:01:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:29,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:29,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179517788] [2022-03-15 18:01:29,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179517788] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:29,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107977218] [2022-03-15 18:01:29,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:01:29,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:29,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:29,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 18:01:29,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 18:01:29,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:29,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:29,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-03-15 18:01:29,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-03-15 18:01:29,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107977218] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:29,937 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:29,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-03-15 18:01:29,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [456646166] [2022-03-15 18:01:29,937 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:29,977 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:30,022 INFO L252 McrAutomatonBuilder]: Finished intersection with 88 states and 128 transitions. [2022-03-15 18:01:30,023 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:30,208 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5305#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:30,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:01:30,209 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:01:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-03-15 18:01:30,210 INFO L87 Difference]: Start difference. First operand 367 states and 730 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:30,333 INFO L93 Difference]: Finished difference Result 433 states and 862 transitions. [2022-03-15 18:01:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 18:01:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-03-15 18:01:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:30,336 INFO L225 Difference]: With dead ends: 433 [2022-03-15 18:01:30,336 INFO L226 Difference]: Without dead ends: 433 [2022-03-15 18:01:30,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-03-15 18:01:30,337 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 166 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:30,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 30 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-15 18:01:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-03-15 18:01:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.9953703703703705) internal successors, (862), 432 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 862 transitions. [2022-03-15 18:01:30,346 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 862 transitions. Word has length 46 [2022-03-15 18:01:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:30,346 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 862 transitions. [2022-03-15 18:01:30,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 862 transitions. [2022-03-15 18:01:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-15 18:01:30,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:30,348 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:30,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:30,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:30,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1467012235, now seen corresponding path program 7 times [2022-03-15 18:01:30,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:30,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480121801] [2022-03-15 18:01:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:30,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:30,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:30,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480121801] [2022-03-15 18:01:30,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480121801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:30,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840485654] [2022-03-15 18:01:30,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:01:30,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:30,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:30,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 18:01:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:30,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:01:30,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:30,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:31,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840485654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:31,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:31,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-03-15 18:01:31,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [799131509] [2022-03-15 18:01:31,152 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:31,163 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:31,226 INFO L252 McrAutomatonBuilder]: Finished intersection with 100 states and 146 transitions. [2022-03-15 18:01:31,226 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:31,427 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6810#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:31,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:01:31,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:01:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:31,429 INFO L87 Difference]: Start difference. First operand 433 states and 862 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:31,554 INFO L93 Difference]: Finished difference Result 499 states and 994 transitions. [2022-03-15 18:01:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 18:01:31,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-03-15 18:01:31,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:31,557 INFO L225 Difference]: With dead ends: 499 [2022-03-15 18:01:31,557 INFO L226 Difference]: Without dead ends: 499 [2022-03-15 18:01:31,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:31,559 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 258 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:31,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 31 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-03-15 18:01:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2022-03-15 18:01:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.9959839357429718) internal successors, (994), 498 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 994 transitions. [2022-03-15 18:01:31,570 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 994 transitions. Word has length 52 [2022-03-15 18:01:31,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:31,571 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 994 transitions. [2022-03-15 18:01:31,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 994 transitions. [2022-03-15 18:01:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-15 18:01:31,573 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:31,573 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:31,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:31,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:31,798 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:31,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:31,798 INFO L85 PathProgramCache]: Analyzing trace with hash -705289675, now seen corresponding path program 8 times [2022-03-15 18:01:31,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:31,799 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105695616] [2022-03-15 18:01:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:31,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:31,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:31,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105695616] [2022-03-15 18:01:31,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105695616] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:31,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295012166] [2022-03-15 18:01:31,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:01:31,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:31,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:31,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:31,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 18:01:32,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:01:32,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:32,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:01:32,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:32,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:32,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295012166] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:32,390 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:32,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-03-15 18:01:32,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1159389873] [2022-03-15 18:01:32,390 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:32,420 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:32,475 INFO L252 McrAutomatonBuilder]: Finished intersection with 112 states and 164 transitions. [2022-03-15 18:01:32,476 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:32,692 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8656#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:32,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 18:01:32,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 18:01:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:32,693 INFO L87 Difference]: Start difference. First operand 499 states and 994 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:32,862 INFO L93 Difference]: Finished difference Result 565 states and 1126 transitions. [2022-03-15 18:01:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:01:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-03-15 18:01:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:32,866 INFO L225 Difference]: With dead ends: 565 [2022-03-15 18:01:32,866 INFO L226 Difference]: Without dead ends: 565 [2022-03-15 18:01:32,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:32,867 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 233 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:32,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 36 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-03-15 18:01:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2022-03-15 18:01:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.99645390070922) internal successors, (1126), 564 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1126 transitions. [2022-03-15 18:01:32,880 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1126 transitions. Word has length 58 [2022-03-15 18:01:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:32,880 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 1126 transitions. [2022-03-15 18:01:32,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1126 transitions. [2022-03-15 18:01:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-15 18:01:32,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:32,883 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:32,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:33,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 18:01:33,108 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash -931591947, now seen corresponding path program 9 times [2022-03-15 18:01:33,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:33,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898827038] [2022-03-15 18:01:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:33,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:33,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898827038] [2022-03-15 18:01:33,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898827038] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:33,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125387618] [2022-03-15 18:01:33,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:01:33,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:33,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:33,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:33,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 18:01:33,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 18:01:33,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:33,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:33,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-03-15 18:01:33,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-03-15 18:01:33,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125387618] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:33,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:33,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5] total 25 [2022-03-15 18:01:33,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1463783484] [2022-03-15 18:01:33,775 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:33,793 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:33,861 INFO L252 McrAutomatonBuilder]: Finished intersection with 124 states and 182 transitions. [2022-03-15 18:01:33,861 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:34,205 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10894#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:34,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 18:01:34,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 18:01:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2022-03-15 18:01:34,207 INFO L87 Difference]: Start difference. First operand 565 states and 1126 transitions. Second operand has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:34,386 INFO L93 Difference]: Finished difference Result 631 states and 1258 transitions. [2022-03-15 18:01:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 18:01:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-03-15 18:01:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:34,388 INFO L225 Difference]: With dead ends: 631 [2022-03-15 18:01:34,389 INFO L226 Difference]: Without dead ends: 631 [2022-03-15 18:01:34,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2022-03-15 18:01:34,389 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 368 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:34,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 38 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:01:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-03-15 18:01:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2022-03-15 18:01:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 1.9968253968253968) internal successors, (1258), 630 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1258 transitions. [2022-03-15 18:01:34,400 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1258 transitions. Word has length 64 [2022-03-15 18:01:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:34,400 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 1258 transitions. [2022-03-15 18:01:34,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1258 transitions. [2022-03-15 18:01:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 18:01:34,402 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:34,402 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:34,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:34,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:34,621 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash -681320523, now seen corresponding path program 10 times [2022-03-15 18:01:34,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:34,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973092772] [2022-03-15 18:01:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-15 18:01:34,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:34,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973092772] [2022-03-15 18:01:34,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973092772] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:34,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97151813] [2022-03-15 18:01:34,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:01:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:34,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:34,916 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:34,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 18:01:35,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:01:35,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:35,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:35,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-03-15 18:01:35,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-03-15 18:01:35,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97151813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:35,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:35,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 5, 5] total 27 [2022-03-15 18:01:35,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [163279588] [2022-03-15 18:01:35,430 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:35,446 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:35,522 INFO L252 McrAutomatonBuilder]: Finished intersection with 136 states and 200 transitions. [2022-03-15 18:01:35,522 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:35,885 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13229#(< |ULTIMATE.start_main_~i~1#1| 20)] [2022-03-15 18:01:35,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 18:01:35,886 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 18:01:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:01:35,886 INFO L87 Difference]: Start difference. First operand 631 states and 1258 transitions. Second operand has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:36,070 INFO L93 Difference]: Finished difference Result 697 states and 1390 transitions. [2022-03-15 18:01:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 18:01:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 18:01:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:36,074 INFO L225 Difference]: With dead ends: 697 [2022-03-15 18:01:36,074 INFO L226 Difference]: Without dead ends: 697 [2022-03-15 18:01:36,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2022-03-15 18:01:36,075 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 388 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:36,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 43 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 18:01:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-03-15 18:01:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2022-03-15 18:01:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.9971264367816093) internal successors, (1390), 696 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1390 transitions. [2022-03-15 18:01:36,089 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1390 transitions. Word has length 70 [2022-03-15 18:01:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:36,089 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1390 transitions. [2022-03-15 18:01:36,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1390 transitions. [2022-03-15 18:01:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-15 18:01:36,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:36,091 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:36,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:36,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-15 18:01:36,307 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:36,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1325226379, now seen corresponding path program 11 times [2022-03-15 18:01:36,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:36,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40786093] [2022-03-15 18:01:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:36,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:36,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:36,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40786093] [2022-03-15 18:01:36,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40786093] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:36,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599463436] [2022-03-15 18:01:36,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:01:36,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:36,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:36,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:36,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 18:01:36,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 18:01:36,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:36,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 18:01:36,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:36,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:36,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599463436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:36,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:36,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-03-15 18:01:36,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [441502314] [2022-03-15 18:01:36,862 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:36,884 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:37,038 INFO L252 McrAutomatonBuilder]: Finished intersection with 148 states and 218 transitions. [2022-03-15 18:01:37,039 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:37,251 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:37,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 18:01:37,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:37,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 18:01:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:01:37,252 INFO L87 Difference]: Start difference. First operand 697 states and 1390 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:37,293 INFO L93 Difference]: Finished difference Result 1138 states and 2272 transitions. [2022-03-15 18:01:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 18:01:37,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-03-15 18:01:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:37,298 INFO L225 Difference]: With dead ends: 1138 [2022-03-15 18:01:37,298 INFO L226 Difference]: Without dead ends: 1138 [2022-03-15 18:01:37,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 18:01:37,299 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:37,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-03-15 18:01:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 949. [2022-03-15 18:01:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.9978902953586497) internal successors, (1894), 948 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1894 transitions. [2022-03-15 18:01:37,318 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1894 transitions. Word has length 76 [2022-03-15 18:01:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:37,318 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1894 transitions. [2022-03-15 18:01:37,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1894 transitions. [2022-03-15 18:01:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-15 18:01:37,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:37,320 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:37,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:37,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 18:01:37,535 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 320183252, now seen corresponding path program 12 times [2022-03-15 18:01:37,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:37,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434097340] [2022-03-15 18:01:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:37,627 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:37,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434097340] [2022-03-15 18:01:37,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434097340] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:37,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180651343] [2022-03-15 18:01:37,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:01:37,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:37,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:37,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 18:01:37,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 18:01:37,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:37,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 18:01:37,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:37,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:38,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180651343] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:38,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:38,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-03-15 18:01:38,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [335957584] [2022-03-15 18:01:38,148 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:38,194 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:38,375 INFO L252 McrAutomatonBuilder]: Finished intersection with 156 states and 230 transitions. [2022-03-15 18:01:38,376 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:38,552 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:38,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 18:01:38,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:38,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 18:01:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 18:01:38,554 INFO L87 Difference]: Start difference. First operand 949 states and 1894 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:38,606 INFO L93 Difference]: Finished difference Result 1390 states and 2776 transitions. [2022-03-15 18:01:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 18:01:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-03-15 18:01:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:38,613 INFO L225 Difference]: With dead ends: 1390 [2022-03-15 18:01:38,613 INFO L226 Difference]: Without dead ends: 1390 [2022-03-15 18:01:38,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 18:01:38,614 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:38,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 13 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:38,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2022-03-15 18:01:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1201. [2022-03-15 18:01:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.9983333333333333) internal successors, (2398), 1200 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2398 transitions. [2022-03-15 18:01:38,677 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2398 transitions. Word has length 80 [2022-03-15 18:01:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:38,677 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 2398 transitions. [2022-03-15 18:01:38,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2398 transitions. [2022-03-15 18:01:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-15 18:01:38,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:38,682 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:38,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:38,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 18:01:38,895 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1646212685, now seen corresponding path program 13 times [2022-03-15 18:01:38,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:38,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858793160] [2022-03-15 18:01:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:38,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:39,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:39,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858793160] [2022-03-15 18:01:39,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858793160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:39,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171173588] [2022-03-15 18:01:39,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:01:39,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:39,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:39,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 18:01:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:39,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 18:01:39,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:39,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:39,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171173588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:39,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:39,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-03-15 18:01:39,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1908403717] [2022-03-15 18:01:39,538 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:39,647 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:39,982 INFO L252 McrAutomatonBuilder]: Finished intersection with 164 states and 242 transitions. [2022-03-15 18:01:39,982 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:40,207 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:40,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 18:01:40,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 18:01:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 18:01:40,209 INFO L87 Difference]: Start difference. First operand 1201 states and 2398 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:40,257 INFO L93 Difference]: Finished difference Result 1642 states and 3280 transitions. [2022-03-15 18:01:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 18:01:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-03-15 18:01:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:40,264 INFO L225 Difference]: With dead ends: 1642 [2022-03-15 18:01:40,264 INFO L226 Difference]: Without dead ends: 1642 [2022-03-15 18:01:40,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 18:01:40,265 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:40,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 14 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:01:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-03-15 18:01:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1453. [2022-03-15 18:01:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 1.9986225895316805) internal successors, (2902), 1452 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2902 transitions. [2022-03-15 18:01:40,295 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2902 transitions. Word has length 84 [2022-03-15 18:01:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:40,295 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 2902 transitions. [2022-03-15 18:01:40,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2902 transitions. [2022-03-15 18:01:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-15 18:01:40,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:40,298 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:40,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:40,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 18:01:40,522 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:40,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1368649746, now seen corresponding path program 14 times [2022-03-15 18:01:40,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:40,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139638732] [2022-03-15 18:01:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:40,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:40,676 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:40,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139638732] [2022-03-15 18:01:40,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139638732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:40,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742826187] [2022-03-15 18:01:40,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:01:40,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:40,678 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:40,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 18:01:40,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:01:40,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:40,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 18:01:40,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:41,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:41,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742826187] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:41,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:41,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-15 18:01:41,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1274906214] [2022-03-15 18:01:41,223 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:41,255 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:41,542 INFO L252 McrAutomatonBuilder]: Finished intersection with 172 states and 254 transitions. [2022-03-15 18:01:41,542 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:41,788 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:41,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 18:01:41,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 18:01:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:01:41,789 INFO L87 Difference]: Start difference. First operand 1453 states and 2902 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:41,858 INFO L93 Difference]: Finished difference Result 1894 states and 3784 transitions. [2022-03-15 18:01:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 18:01:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have 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 [2022-03-15 18:01:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:41,866 INFO L225 Difference]: With dead ends: 1894 [2022-03-15 18:01:41,866 INFO L226 Difference]: Without dead ends: 1894 [2022-03-15 18:01:41,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 18:01:41,867 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 54 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:41,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 17 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-03-15 18:01:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1705. [2022-03-15 18:01:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.9988262910798122) internal successors, (3406), 1704 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 3406 transitions. [2022-03-15 18:01:41,910 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 3406 transitions. Word has length 88 [2022-03-15 18:01:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:41,911 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 3406 transitions. [2022-03-15 18:01:41,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 3406 transitions. [2022-03-15 18:01:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-15 18:01:41,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:41,915 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:41,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:42,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:42,146 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:42,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash 276745969, now seen corresponding path program 15 times [2022-03-15 18:01:42,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:42,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737024091] [2022-03-15 18:01:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:42,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:42,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:42,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737024091] [2022-03-15 18:01:42,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737024091] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:42,332 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87147071] [2022-03-15 18:01:42,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:01:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:42,333 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:42,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 18:01:42,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 18:01:42,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:42,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 18:01:42,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:42,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:42,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87147071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:42,976 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:42,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 18:01:42,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1411327715] [2022-03-15 18:01:42,977 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:43,001 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:43,286 INFO L252 McrAutomatonBuilder]: Finished intersection with 180 states and 266 transitions. [2022-03-15 18:01:43,286 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:43,538 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:43,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 18:01:43,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 18:01:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 18:01:43,539 INFO L87 Difference]: Start difference. First operand 1705 states and 3406 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:43,615 INFO L93 Difference]: Finished difference Result 2146 states and 4288 transitions. [2022-03-15 18:01:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 18:01:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-03-15 18:01:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:43,624 INFO L225 Difference]: With dead ends: 2146 [2022-03-15 18:01:43,624 INFO L226 Difference]: Without dead ends: 2146 [2022-03-15 18:01:43,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 18:01:43,625 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:43,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 19 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-03-15 18:01:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1957. [2022-03-15 18:01:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1956 states have (on average 1.9989775051124745) internal successors, (3910), 1956 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3910 transitions. [2022-03-15 18:01:43,667 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3910 transitions. Word has length 92 [2022-03-15 18:01:43,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:43,667 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 3910 transitions. [2022-03-15 18:01:43,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3910 transitions. [2022-03-15 18:01:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 18:01:43,671 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:43,671 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:43,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:43,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 18:01:43,883 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:43,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:43,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1894701488, now seen corresponding path program 16 times [2022-03-15 18:01:43,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:43,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661592617] [2022-03-15 18:01:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:43,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:44,045 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:44,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661592617] [2022-03-15 18:01:44,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661592617] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:44,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195904713] [2022-03-15 18:01:44,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:01:44,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:44,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:44,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 18:01:44,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:01:44,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:44,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 18:01:44,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:44,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:45,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195904713] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:45,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:45,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-03-15 18:01:45,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1909585801] [2022-03-15 18:01:45,079 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:45,161 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:45,335 INFO L252 McrAutomatonBuilder]: Finished intersection with 188 states and 278 transitions. [2022-03-15 18:01:45,335 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:45,653 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:45,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 18:01:45,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 18:01:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2022-03-15 18:01:45,655 INFO L87 Difference]: Start difference. First operand 1957 states and 3910 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:45,746 INFO L93 Difference]: Finished difference Result 2398 states and 4792 transitions. [2022-03-15 18:01:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 18:01:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 18:01:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:45,756 INFO L225 Difference]: With dead ends: 2398 [2022-03-15 18:01:45,756 INFO L226 Difference]: Without dead ends: 2398 [2022-03-15 18:01:45,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2022-03-15 18:01:45,757 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 88 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:45,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 20 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-03-15 18:01:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2209. [2022-03-15 18:01:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 2208 states have (on average 1.9990942028985508) internal successors, (4414), 2208 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 4414 transitions. [2022-03-15 18:01:45,805 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 4414 transitions. Word has length 96 [2022-03-15 18:01:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:45,847 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 4414 transitions. [2022-03-15 18:01:45,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 4414 transitions. [2022-03-15 18:01:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-15 18:01:45,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:45,853 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:45,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:46,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 18:01:46,063 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1138406959, now seen corresponding path program 17 times [2022-03-15 18:01:46,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:46,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183170398] [2022-03-15 18:01:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:46,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:46,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183170398] [2022-03-15 18:01:46,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183170398] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:46,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042365624] [2022-03-15 18:01:46,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:01:46,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:46,184 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:46,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 18:01:46,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 18:01:46,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:46,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 18:01:46,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:46,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:46,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042365624] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:46,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:46,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-03-15 18:01:46,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [210700030] [2022-03-15 18:01:46,926 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:46,953 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:47,147 INFO L252 McrAutomatonBuilder]: Finished intersection with 196 states and 290 transitions. [2022-03-15 18:01:47,147 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:47,460 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:47,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 18:01:47,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 18:01:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2022-03-15 18:01:47,461 INFO L87 Difference]: Start difference. First operand 2209 states and 4414 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:47,545 INFO L93 Difference]: Finished difference Result 2650 states and 5296 transitions. [2022-03-15 18:01:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 18:01:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-03-15 18:01:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:47,553 INFO L225 Difference]: With dead ends: 2650 [2022-03-15 18:01:47,553 INFO L226 Difference]: Without dead ends: 2650 [2022-03-15 18:01:47,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2022-03-15 18:01:47,554 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 107 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:47,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 22 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-03-15 18:01:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2461. [2022-03-15 18:01:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2460 states have (on average 1.9991869918699188) internal successors, (4918), 2460 states have internal predecessors, (4918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4918 transitions. [2022-03-15 18:01:47,608 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4918 transitions. Word has length 100 [2022-03-15 18:01:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:47,608 INFO L470 AbstractCegarLoop]: Abstraction has 2461 states and 4918 transitions. [2022-03-15 18:01:47,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4918 transitions. [2022-03-15 18:01:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-15 18:01:47,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:47,614 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:47,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:47,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:47,830 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:47,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:47,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1468743310, now seen corresponding path program 18 times [2022-03-15 18:01:47,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:47,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606693935] [2022-03-15 18:01:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:47,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:47,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:47,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606693935] [2022-03-15 18:01:47,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606693935] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:47,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112931938] [2022-03-15 18:01:47,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:01:47,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:47,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:47,994 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:47,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 18:01:48,375 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-03-15 18:01:48,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 18:01:48,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:48,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:48,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112931938] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:48,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:48,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-03-15 18:01:48,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [157269490] [2022-03-15 18:01:48,813 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:48,831 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:49,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 204 states and 302 transitions. [2022-03-15 18:01:49,000 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:49,328 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:49,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 18:01:49,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 18:01:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:49,330 INFO L87 Difference]: Start difference. First operand 2461 states and 4918 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:49,399 INFO L93 Difference]: Finished difference Result 2902 states and 5800 transitions. [2022-03-15 18:01:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 18:01:49,400 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-03-15 18:01:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:49,410 INFO L225 Difference]: With dead ends: 2902 [2022-03-15 18:01:49,410 INFO L226 Difference]: Without dead ends: 2902 [2022-03-15 18:01:49,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:49,411 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 150 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:49,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 23 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-03-15 18:01:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2713. [2022-03-15 18:01:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 1.9992625368731562) internal successors, (5422), 2712 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 5422 transitions. [2022-03-15 18:01:49,468 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 5422 transitions. Word has length 104 [2022-03-15 18:01:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:49,468 INFO L470 AbstractCegarLoop]: Abstraction has 2713 states and 5422 transitions. [2022-03-15 18:01:49,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 5422 transitions. [2022-03-15 18:01:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-15 18:01:49,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:49,474 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:49,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:49,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:49,700 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1796046995, now seen corresponding path program 19 times [2022-03-15 18:01:49,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:49,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094913303] [2022-03-15 18:01:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:49,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:49,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094913303] [2022-03-15 18:01:49,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094913303] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:49,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279261458] [2022-03-15 18:01:49,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:01:49,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:49,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:49,873 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:49,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 18:01:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:50,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 18:01:50,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:50,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:50,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279261458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:50,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:50,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-03-15 18:01:50,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1812471126] [2022-03-15 18:01:50,624 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:50,657 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:50,938 INFO L252 McrAutomatonBuilder]: Finished intersection with 212 states and 314 transitions. [2022-03-15 18:01:50,938 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:51,291 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:51,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 18:01:51,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 18:01:51,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:51,292 INFO L87 Difference]: Start difference. First operand 2713 states and 5422 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:51,400 INFO L93 Difference]: Finished difference Result 3154 states and 6304 transitions. [2022-03-15 18:01:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 18:01:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-03-15 18:01:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:51,412 INFO L225 Difference]: With dead ends: 3154 [2022-03-15 18:01:51,413 INFO L226 Difference]: Without dead ends: 3154 [2022-03-15 18:01:51,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:51,413 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 145 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:51,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 27 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2022-03-15 18:01:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 2965. [2022-03-15 18:01:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2964 states have (on average 1.9993252361673415) internal successors, (5926), 2964 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 5926 transitions. [2022-03-15 18:01:51,482 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 5926 transitions. Word has length 108 [2022-03-15 18:01:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:51,483 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 5926 transitions. [2022-03-15 18:01:51,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 5926 transitions. [2022-03-15 18:01:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-15 18:01:51,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:51,491 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:51,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:51,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:51,715 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1493186764, now seen corresponding path program 20 times [2022-03-15 18:01:51,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:51,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791958150] [2022-03-15 18:01:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:51,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:51,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791958150] [2022-03-15 18:01:51,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791958150] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:51,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287760809] [2022-03-15 18:01:51,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:01:51,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:51,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:51,871 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:51,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 18:01:52,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:01:52,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:52,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 18:01:52,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:52,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:52,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287760809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:52,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:52,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2022-03-15 18:01:52,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [861229053] [2022-03-15 18:01:52,601 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:52,622 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:53,034 INFO L252 McrAutomatonBuilder]: Finished intersection with 220 states and 326 transitions. [2022-03-15 18:01:53,035 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:53,507 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:53,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 18:01:53,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:53,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 18:01:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:53,508 INFO L87 Difference]: Start difference. First operand 2965 states and 5926 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:53,600 INFO L93 Difference]: Finished difference Result 3406 states and 6808 transitions. [2022-03-15 18:01:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 18:01:53,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-03-15 18:01:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:53,612 INFO L225 Difference]: With dead ends: 3406 [2022-03-15 18:01:53,612 INFO L226 Difference]: Without dead ends: 3406 [2022-03-15 18:01:53,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:53,613 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 124 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:53,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 29 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2022-03-15 18:01:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3217. [2022-03-15 18:01:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3216 states have (on average 1.9993781094527363) internal successors, (6430), 3216 states have internal predecessors, (6430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 6430 transitions. [2022-03-15 18:01:53,675 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 6430 transitions. Word has length 112 [2022-03-15 18:01:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:53,676 INFO L470 AbstractCegarLoop]: Abstraction has 3217 states and 6430 transitions. [2022-03-15 18:01:53,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 6430 transitions. [2022-03-15 18:01:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-15 18:01:53,682 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:53,682 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:53,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:53,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 18:01:53,896 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2101073237, now seen corresponding path program 21 times [2022-03-15 18:01:53,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:53,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834109299] [2022-03-15 18:01:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:54,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:54,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834109299] [2022-03-15 18:01:54,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834109299] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:54,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687378708] [2022-03-15 18:01:54,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:01:54,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:54,068 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:54,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 18:01:54,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-03-15 18:01:54,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:54,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 18:01:54,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:54,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:54,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687378708] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:54,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:54,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-03-15 18:01:54,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1422714377] [2022-03-15 18:01:54,946 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:54,984 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:55,321 INFO L252 McrAutomatonBuilder]: Finished intersection with 228 states and 338 transitions. [2022-03-15 18:01:55,321 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:55,795 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:55,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 18:01:55,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 18:01:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:55,796 INFO L87 Difference]: Start difference. First operand 3217 states and 6430 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:55,923 INFO L93 Difference]: Finished difference Result 3658 states and 7312 transitions. [2022-03-15 18:01:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 18:01:55,923 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-03-15 18:01:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:55,934 INFO L225 Difference]: With dead ends: 3658 [2022-03-15 18:01:55,935 INFO L226 Difference]: Without dead ends: 3658 [2022-03-15 18:01:55,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:55,935 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 131 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:55,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 35 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2022-03-15 18:01:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3469. [2022-03-15 18:01:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3469 states, 3468 states have (on average 1.9994232987312572) internal successors, (6934), 3468 states have internal predecessors, (6934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 6934 transitions. [2022-03-15 18:01:56,000 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 6934 transitions. Word has length 116 [2022-03-15 18:01:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:56,000 INFO L470 AbstractCegarLoop]: Abstraction has 3469 states and 6934 transitions. [2022-03-15 18:01:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 6934 transitions. [2022-03-15 18:01:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-03-15 18:01:56,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:56,008 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:56,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:56,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 18:01:56,230 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:56,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:56,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1668158730, now seen corresponding path program 22 times [2022-03-15 18:01:56,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:56,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188377765] [2022-03-15 18:01:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:56,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:56,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:56,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188377765] [2022-03-15 18:01:56,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188377765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:56,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619577511] [2022-03-15 18:01:56,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:01:56,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:56,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:56,412 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:56,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 18:01:57,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:01:57,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:57,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 18:01:57,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:57,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:01:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:57,776 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619577511] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:01:57,776 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:01:57,776 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2022-03-15 18:01:57,776 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1896144591] [2022-03-15 18:01:57,776 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:01:57,800 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:01:58,191 INFO L252 McrAutomatonBuilder]: Finished intersection with 236 states and 350 transitions. [2022-03-15 18:01:58,192 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:01:58,588 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:01:58,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 18:01:58,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:01:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 18:01:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:58,590 INFO L87 Difference]: Start difference. First operand 3469 states and 6934 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:01:58,793 INFO L93 Difference]: Finished difference Result 3910 states and 7816 transitions. [2022-03-15 18:01:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 18:01:58,793 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-03-15 18:01:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:01:58,804 INFO L225 Difference]: With dead ends: 3910 [2022-03-15 18:01:58,804 INFO L226 Difference]: Without dead ends: 3910 [2022-03-15 18:01:58,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:01:58,805 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 230 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:01:58,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 32 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:01:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2022-03-15 18:01:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3721. [2022-03-15 18:01:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 1.999462365591398) internal successors, (7438), 3720 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 7438 transitions. [2022-03-15 18:01:58,867 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 7438 transitions. Word has length 120 [2022-03-15 18:01:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:01:58,867 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 7438 transitions. [2022-03-15 18:01:58,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:01:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 7438 transitions. [2022-03-15 18:01:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-03-15 18:01:58,874 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:01:58,874 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:01:58,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 18:01:59,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:59,095 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:01:59,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:01:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1370638359, now seen corresponding path program 23 times [2022-03-15 18:01:59,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:01:59,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773131311] [2022-03-15 18:01:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:01:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:01:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:01:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:59,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:01:59,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773131311] [2022-03-15 18:01:59,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773131311] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:01:59,290 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698860022] [2022-03-15 18:01:59,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:01:59,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:01:59,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:01:59,292 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:01:59,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 18:01:59,656 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 18:01:59,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:01:59,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 18:01:59,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:01:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:01:59,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:00,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698860022] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:00,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:00,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-03-15 18:02:00,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [441814771] [2022-03-15 18:02:00,090 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:00,115 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:00,493 INFO L252 McrAutomatonBuilder]: Finished intersection with 244 states and 362 transitions. [2022-03-15 18:02:00,493 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:00,881 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:00,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 18:02:00,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 18:02:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:00,882 INFO L87 Difference]: Start difference. First operand 3721 states and 7438 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 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) [2022-03-15 18:02:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:02:00,989 INFO L93 Difference]: Finished difference Result 4162 states and 8320 transitions. [2022-03-15 18:02:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 18:02:00,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 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 124 [2022-03-15 18:02:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:02:00,998 INFO L225 Difference]: With dead ends: 4162 [2022-03-15 18:02:00,998 INFO L226 Difference]: Without dead ends: 4162 [2022-03-15 18:02:00,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:00,999 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 173 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:02:01,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 35 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:02:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2022-03-15 18:02:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 3973. [2022-03-15 18:02:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 3972 states have (on average 1.999496475327291) internal successors, (7942), 3972 states have internal predecessors, (7942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 7942 transitions. [2022-03-15 18:02:01,059 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 7942 transitions. Word has length 124 [2022-03-15 18:02:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:02:01,059 INFO L470 AbstractCegarLoop]: Abstraction has 3973 states and 7942 transitions. [2022-03-15 18:02:01,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 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) [2022-03-15 18:02:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 7942 transitions. [2022-03-15 18:02:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-15 18:02:01,067 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:02:01,067 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:02:01,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 18:02:01,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:01,293 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:02:01,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:02:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1758647112, now seen corresponding path program 24 times [2022-03-15 18:02:01,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:02:01,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591273473] [2022-03-15 18:02:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:02:01,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:02:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:01,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:02:01,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591273473] [2022-03-15 18:02:01,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591273473] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:02:01,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804415565] [2022-03-15 18:02:01,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:02:01,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:02:01,588 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:02:01,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 18:02:02,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-15 18:02:02,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:02:02,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 18:02:02,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:02:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:02,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:02,558 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804415565] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:02,558 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:02,558 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2022-03-15 18:02:02,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1943230701] [2022-03-15 18:02:02,558 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:02,584 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:02,973 INFO L252 McrAutomatonBuilder]: Finished intersection with 252 states and 374 transitions. [2022-03-15 18:02:02,973 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:03,396 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:03,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 18:02:03,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 18:02:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:03,397 INFO L87 Difference]: Start difference. First operand 3973 states and 7942 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:02:03,505 INFO L93 Difference]: Finished difference Result 4414 states and 8824 transitions. [2022-03-15 18:02:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 18:02:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-03-15 18:02:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:02:03,511 INFO L225 Difference]: With dead ends: 4414 [2022-03-15 18:02:03,511 INFO L226 Difference]: Without dead ends: 4414 [2022-03-15 18:02:03,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:03,511 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 236 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:02:03,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 37 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:02:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-03-15 18:02:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4225. [2022-03-15 18:02:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4225 states, 4224 states have (on average 1.9995265151515151) internal successors, (8446), 4224 states have internal predecessors, (8446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 8446 transitions. [2022-03-15 18:02:03,569 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 8446 transitions. Word has length 128 [2022-03-15 18:02:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:02:03,569 INFO L470 AbstractCegarLoop]: Abstraction has 4225 states and 8446 transitions. [2022-03-15 18:02:03,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 8446 transitions. [2022-03-15 18:02:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-03-15 18:02:03,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:02:03,577 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:02:03,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 18:02:03,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 18:02:03,792 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:02:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:02:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash -628283609, now seen corresponding path program 25 times [2022-03-15 18:02:03,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:02:03,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945025673] [2022-03-15 18:02:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:02:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:02:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:04,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:02:04,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945025673] [2022-03-15 18:02:04,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945025673] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:02:04,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368864522] [2022-03-15 18:02:04,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:02:04,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:04,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:02:04,009 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:02:04,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 18:02:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:04,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 18:02:04,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:02:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:04,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:04,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368864522] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:04,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:04,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 23 [2022-03-15 18:02:04,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2135190367] [2022-03-15 18:02:04,835 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:04,878 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:05,342 INFO L252 McrAutomatonBuilder]: Finished intersection with 260 states and 386 transitions. [2022-03-15 18:02:05,342 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:05,768 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:05,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 18:02:05,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 18:02:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:05,769 INFO L87 Difference]: Start difference. First operand 4225 states and 8446 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:02:05,910 INFO L93 Difference]: Finished difference Result 4666 states and 9328 transitions. [2022-03-15 18:02:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 18:02:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-03-15 18:02:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:02:05,917 INFO L225 Difference]: With dead ends: 4666 [2022-03-15 18:02:05,917 INFO L226 Difference]: Without dead ends: 4666 [2022-03-15 18:02:05,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:05,917 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 207 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:02:05,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 40 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:02:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2022-03-15 18:02:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4477. [2022-03-15 18:02:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 1.9995531724754245) internal successors, (8950), 4476 states have internal predecessors, (8950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 8950 transitions. [2022-03-15 18:02:05,980 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 8950 transitions. Word has length 132 [2022-03-15 18:02:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:02:05,981 INFO L470 AbstractCegarLoop]: Abstraction has 4477 states and 8950 transitions. [2022-03-15 18:02:05,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 8950 transitions. [2022-03-15 18:02:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-03-15 18:02:05,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:02:05,990 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:02:06,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 18:02:06,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 18:02:06,214 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:02:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:02:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2100065158, now seen corresponding path program 26 times [2022-03-15 18:02:06,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:02:06,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659057121] [2022-03-15 18:02:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:02:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:02:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:06,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:02:06,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659057121] [2022-03-15 18:02:06,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659057121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:02:06,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968686369] [2022-03-15 18:02:06,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:02:06,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:06,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:02:06,446 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:02:06,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 18:02:06,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:02:06,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:02:06,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 18:02:06,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:02:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:06,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:07,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968686369] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:07,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:07,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2022-03-15 18:02:07,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1135154082] [2022-03-15 18:02:07,308 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:07,338 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:07,847 INFO L252 McrAutomatonBuilder]: Finished intersection with 268 states and 398 transitions. [2022-03-15 18:02:07,847 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:08,391 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:08,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 18:02:08,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 18:02:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:08,392 INFO L87 Difference]: Start difference. First operand 4477 states and 8950 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:02:08,554 INFO L93 Difference]: Finished difference Result 4918 states and 9832 transitions. [2022-03-15 18:02:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 18:02:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-03-15 18:02:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:02:08,562 INFO L225 Difference]: With dead ends: 4918 [2022-03-15 18:02:08,562 INFO L226 Difference]: Without dead ends: 4918 [2022-03-15 18:02:08,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 399 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:08,563 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 226 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:02:08,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 42 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:02:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4918 states. [2022-03-15 18:02:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4918 to 4729. [2022-03-15 18:02:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4728 states have (on average 1.9995769881556684) internal successors, (9454), 4728 states have internal predecessors, (9454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 9454 transitions. [2022-03-15 18:02:08,627 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 9454 transitions. Word has length 136 [2022-03-15 18:02:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:02:08,627 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 9454 transitions. [2022-03-15 18:02:08,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 9454 transitions. [2022-03-15 18:02:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-15 18:02:08,635 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:02:08,635 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:02:08,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 18:02:08,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 18:02:08,848 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:02:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:02:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -327124891, now seen corresponding path program 27 times [2022-03-15 18:02:08,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:02:08,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857933436] [2022-03-15 18:02:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:02:08,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:02:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:09,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:02:09,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857933436] [2022-03-15 18:02:09,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857933436] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:02:09,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018817701] [2022-03-15 18:02:09,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:02:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:02:09,100 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:02:09,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 18:02:09,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-03-15 18:02:09,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:02:09,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 18:02:09,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:02:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:09,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:10,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018817701] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:10,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:10,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2022-03-15 18:02:10,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1393491330] [2022-03-15 18:02:10,193 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:10,376 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:10,869 INFO L252 McrAutomatonBuilder]: Finished intersection with 276 states and 410 transitions. [2022-03-15 18:02:10,870 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:11,362 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:11,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 18:02:11,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:11,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 18:02:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:11,363 INFO L87 Difference]: Start difference. First operand 4729 states and 9454 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:02:11,531 INFO L93 Difference]: Finished difference Result 5170 states and 10336 transitions. [2022-03-15 18:02:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 18:02:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-03-15 18:02:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:02:11,540 INFO L225 Difference]: With dead ends: 5170 [2022-03-15 18:02:11,540 INFO L226 Difference]: Without dead ends: 5170 [2022-03-15 18:02:11,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 412 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:11,546 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 341 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:02:11,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 42 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:02:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2022-03-15 18:02:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 4981. [2022-03-15 18:02:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 4980 states have (on average 1.9995983935742971) internal successors, (9958), 4980 states have internal predecessors, (9958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 9958 transitions. [2022-03-15 18:02:11,632 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 9958 transitions. Word has length 140 [2022-03-15 18:02:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:02:11,632 INFO L470 AbstractCegarLoop]: Abstraction has 4981 states and 9958 transitions. [2022-03-15 18:02:11,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 9958 transitions. [2022-03-15 18:02:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-03-15 18:02:11,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:02:11,643 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:02:11,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 18:02:11,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 18:02:11,868 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:02:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:02:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash -696715836, now seen corresponding path program 28 times [2022-03-15 18:02:11,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:02:11,869 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104175275] [2022-03-15 18:02:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:02:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:02:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:12,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:02:12,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104175275] [2022-03-15 18:02:12,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104175275] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:02:12,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027517950] [2022-03-15 18:02:12,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:02:12,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:12,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:02:12,163 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:02:12,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 18:02:13,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:02:13,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:02:13,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 18:02:13,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:02:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:14,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-03-15 18:02:14,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027517950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:14,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:14,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2022-03-15 18:02:14,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [656266735] [2022-03-15 18:02:14,424 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:14,560 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:15,088 INFO L252 McrAutomatonBuilder]: Finished intersection with 284 states and 422 transitions. [2022-03-15 18:02:15,089 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:15,592 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:15,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 18:02:15,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 18:02:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:15,593 INFO L87 Difference]: Start difference. First operand 4981 states and 9958 transitions. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:02:15,758 INFO L93 Difference]: Finished difference Result 5233 states and 10462 transitions. [2022-03-15 18:02:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 18:02:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-03-15 18:02:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:02:15,765 INFO L225 Difference]: With dead ends: 5233 [2022-03-15 18:02:15,765 INFO L226 Difference]: Without dead ends: 5233 [2022-03-15 18:02:15,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 424 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 18:02:15,766 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 288 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:02:15,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 44 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 18:02:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-03-15 18:02:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 5233. [2022-03-15 18:02:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.9996177370030581) internal successors, (10462), 5232 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 10462 transitions. [2022-03-15 18:02:15,836 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 10462 transitions. Word has length 144 [2022-03-15 18:02:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:02:15,836 INFO L470 AbstractCegarLoop]: Abstraction has 5233 states and 10462 transitions. [2022-03-15 18:02:15,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:02:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 10462 transitions. [2022-03-15 18:02:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:02:15,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:02:15,845 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:02:15,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 18:02:16,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:16,060 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:02:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:02:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash -349852765, now seen corresponding path program 29 times [2022-03-15 18:02:16,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:02:16,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843562505] [2022-03-15 18:02:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:02:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:02:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:02:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:02:17,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:02:17,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843562505] [2022-03-15 18:02:17,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843562505] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:02:17,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417577245] [2022-03-15 18:02:17,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:02:17,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:02:17,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:02:17,965 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:02:17,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 18:02:18,436 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 18:02:18,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:02:18,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:02:18,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:02:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:02:19,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:02:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:02:19,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417577245] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:02:19,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:02:19,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:02:19,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1108955489] [2022-03-15 18:02:19,692 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:02:19,746 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:02:20,397 INFO L252 McrAutomatonBuilder]: Finished intersection with 292 states and 434 transitions. [2022-03-15 18:02:20,397 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:02:21,865 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:02:21,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:02:21,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:02:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:02:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:02:21,870 INFO L87 Difference]: Start difference. First operand 5233 states and 10462 transitions. Second operand has 63 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:03:06,209 INFO L93 Difference]: Finished difference Result 34492 states and 68977 transitions. [2022-03-15 18:03:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2022-03-15 18:03:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:03:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:03:06,285 INFO L225 Difference]: With dead ends: 34492 [2022-03-15 18:03:06,285 INFO L226 Difference]: Without dead ends: 34490 [2022-03-15 18:03:06,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 431 SyntacticMatches, 6 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26335 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1043, Invalid=84513, Unknown=0, NotChecked=0, Total=85556 [2022-03-15 18:03:06,297 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1128 mSDsluCounter, 76116 mSDsCounter, 0 mSdLazyCounter, 124888 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 125368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 124888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:03:06,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 21 Invalid, 125368 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [480 Valid, 124888 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time] [2022-03-15 18:03:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34490 states. [2022-03-15 18:03:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34490 to 5485. [2022-03-15 18:03:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.014040846097739) internal successors, (11045), 5484 states have internal predecessors, (11045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 11045 transitions. [2022-03-15 18:03:06,521 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 11045 transitions. Word has length 148 [2022-03-15 18:03:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:03:06,522 INFO L470 AbstractCegarLoop]: Abstraction has 5485 states and 11045 transitions. [2022-03-15 18:03:06,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 11045 transitions. [2022-03-15 18:03:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:03:06,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:03:06,531 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:03:06,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-15 18:03:06,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:03:06,736 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:03:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:03:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1676890417, now seen corresponding path program 30 times [2022-03-15 18:03:06,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:03:06,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585300536] [2022-03-15 18:03:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:03:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:03:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:03:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2022-03-15 18:03:06,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:03:06,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585300536] [2022-03-15 18:03:06,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585300536] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:03:06,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:03:06,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:03:06,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [104609432] [2022-03-15 18:03:06,822 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:03:06,874 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:03:07,410 INFO L252 McrAutomatonBuilder]: Finished intersection with 286 states and 422 transitions. [2022-03-15 18:03:07,410 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:03:07,786 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:03:07,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:03:07,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:03:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:03:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:03:07,787 INFO L87 Difference]: Start difference. First operand 5485 states and 11045 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:03:07,808 INFO L93 Difference]: Finished difference Result 2945 states and 3782 transitions. [2022-03-15 18:03:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:03:07,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:03:07,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:03:07,812 INFO L225 Difference]: With dead ends: 2945 [2022-03-15 18:03:07,812 INFO L226 Difference]: Without dead ends: 2945 [2022-03-15 18:03:07,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:03:07,813 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:03:07,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:03:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-03-15 18:03:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2924. [2022-03-15 18:03:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2923 states have (on average 1.2863496407800206) internal successors, (3760), 2923 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3760 transitions. [2022-03-15 18:03:07,840 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3760 transitions. Word has length 148 [2022-03-15 18:03:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:03:07,841 INFO L470 AbstractCegarLoop]: Abstraction has 2924 states and 3760 transitions. [2022-03-15 18:03:07,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3760 transitions. [2022-03-15 18:03:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:03:07,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:03:07,844 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:03:07,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-15 18:03:07,844 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:03:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:03:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -28162525, now seen corresponding path program 31 times [2022-03-15 18:03:07,847 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:03:07,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008183796] [2022-03-15 18:03:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:03:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:03:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:03:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:03:09,467 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:03:09,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008183796] [2022-03-15 18:03:09,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008183796] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:03:09,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142855546] [2022-03-15 18:03:09,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:03:09,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:03:09,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:03:09,468 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:03:09,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 18:03:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:03:09,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:03:09,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:03:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:03:10,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:03:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:03:11,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142855546] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:03:11,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:03:11,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:03:11,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1260012212] [2022-03-15 18:03:11,028 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:03:11,062 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:03:11,669 INFO L252 McrAutomatonBuilder]: Finished intersection with 284 states and 418 transitions. [2022-03-15 18:03:11,669 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:03:12,932 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:03:12,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:03:12,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:03:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:03:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:03:12,933 INFO L87 Difference]: Start difference. First operand 2924 states and 3760 transitions. Second operand has 63 states, 62 states have (on average 3.306451612903226) internal successors, (205), 62 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:03:47,632 INFO L93 Difference]: Finished difference Result 14303 states and 20974 transitions. [2022-03-15 18:03:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-03-15 18:03:47,632 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.306451612903226) internal successors, (205), 62 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:03:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:03:47,652 INFO L225 Difference]: With dead ends: 14303 [2022-03-15 18:03:47,652 INFO L226 Difference]: Without dead ends: 14301 [2022-03-15 18:03:47,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 423 SyntacticMatches, 6 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26565 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1047, Invalid=85095, Unknown=0, NotChecked=0, Total=86142 [2022-03-15 18:03:47,659 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 864 mSDsluCounter, 61545 mSDsCounter, 0 mSdLazyCounter, 96389 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 96640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 96389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:03:47,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 21 Invalid, 96640 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [251 Valid, 96389 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2022-03-15 18:03:47,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14301 states. [2022-03-15 18:03:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14301 to 2927. [2022-03-15 18:03:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.2863978127136022) internal successors, (3764), 2926 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3764 transitions. [2022-03-15 18:03:47,758 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3764 transitions. Word has length 148 [2022-03-15 18:03:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:03:47,758 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 3764 transitions. [2022-03-15 18:03:47,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.306451612903226) internal successors, (205), 62 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:03:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3764 transitions. [2022-03-15 18:03:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:03:47,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:03:47,762 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:03:47,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 18:03:47,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-03-15 18:03:47,975 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:03:47,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:03:47,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1594875741, now seen corresponding path program 32 times [2022-03-15 18:03:47,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:03:47,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108711795] [2022-03-15 18:03:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:03:47,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:03:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:03:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:03:49,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:03:49,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108711795] [2022-03-15 18:03:49,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108711795] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:03:49,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955909356] [2022-03-15 18:03:49,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:03:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:03:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:03:49,584 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:03:49,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 18:03:49,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:03:49,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:03:49,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:03:49,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:03:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:03:50,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:03:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:03:51,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955909356] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:03:51,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:03:51,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:03:51,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [114449308] [2022-03-15 18:03:51,047 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:03:51,081 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:03:51,453 INFO L252 McrAutomatonBuilder]: Finished intersection with 280 states and 410 transitions. [2022-03-15 18:03:51,453 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:03:52,843 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:03:52,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:03:52,843 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:03:52,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:03:52,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:03:52,844 INFO L87 Difference]: Start difference. First operand 2927 states and 3764 transitions. Second operand has 63 states, 62 states have (on average 3.274193548387097) internal successors, (203), 62 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:04:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:04:27,736 INFO L93 Difference]: Finished difference Result 14307 states and 20976 transitions. [2022-03-15 18:04:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2022-03-15 18:04:27,736 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.274193548387097) internal successors, (203), 62 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:04:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:04:27,759 INFO L225 Difference]: With dead ends: 14307 [2022-03-15 18:04:27,760 INFO L226 Difference]: Without dead ends: 14305 [2022-03-15 18:04:27,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 419 SyntacticMatches, 6 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26796 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1051, Invalid=85679, Unknown=0, NotChecked=0, Total=86730 [2022-03-15 18:04:27,765 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 890 mSDsluCounter, 61781 mSDsCounter, 0 mSdLazyCounter, 96750 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 97002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 96750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-03-15 18:04:27,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 21 Invalid, 97002 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [252 Valid, 96750 Invalid, 0 Unknown, 0 Unchecked, 28.1s Time] [2022-03-15 18:04:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14305 states. [2022-03-15 18:04:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14305 to 2933. [2022-03-15 18:04:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2932 states have (on average 1.2861527967257844) internal successors, (3771), 2932 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:04:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3771 transitions. [2022-03-15 18:04:27,868 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3771 transitions. Word has length 148 [2022-03-15 18:04:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:04:27,869 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 3771 transitions. [2022-03-15 18:04:27,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.274193548387097) internal successors, (203), 62 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:04:27,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3771 transitions. [2022-03-15 18:04:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:04:27,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:04:27,873 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:04:27,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 18:04:28,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:04:28,100 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:04:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:04:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1113638109, now seen corresponding path program 33 times [2022-03-15 18:04:28,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:04:28,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999655767] [2022-03-15 18:04:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:04:28,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:04:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:04:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:04:29,812 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:04:29,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999655767] [2022-03-15 18:04:29,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999655767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:04:29,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999990690] [2022-03-15 18:04:29,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:04:29,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:04:29,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:04:29,814 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:04:29,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 18:04:30,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-03-15 18:04:30,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:04:30,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:04:30,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:04:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:04:31,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:04:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:04:31,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999990690] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:04:31,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:04:31,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:04:31,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [848101808] [2022-03-15 18:04:31,582 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:04:31,616 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:04:32,112 INFO L252 McrAutomatonBuilder]: Finished intersection with 276 states and 402 transitions. [2022-03-15 18:04:32,112 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:04:33,296 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:04:33,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:04:33,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:04:33,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:04:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:04:33,298 INFO L87 Difference]: Start difference. First operand 2933 states and 3771 transitions. Second operand has 63 states, 62 states have (on average 3.2419354838709675) internal successors, (201), 62 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:05:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:05:08,180 INFO L93 Difference]: Finished difference Result 14313 states and 20983 transitions. [2022-03-15 18:05:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2022-03-15 18:05:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.2419354838709675) internal successors, (201), 62 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:05:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:05:08,205 INFO L225 Difference]: With dead ends: 14313 [2022-03-15 18:05:08,205 INFO L226 Difference]: Without dead ends: 14311 [2022-03-15 18:05:08,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 415 SyntacticMatches, 6 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27028 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1055, Invalid=86265, Unknown=0, NotChecked=0, Total=87320 [2022-03-15 18:05:08,211 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 915 mSDsluCounter, 62017 mSDsCounter, 0 mSdLazyCounter, 97111 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 97364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 97111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:05:08,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 21 Invalid, 97364 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [253 Valid, 97111 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time] [2022-03-15 18:05:08,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14311 states. [2022-03-15 18:05:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14311 to 2939. [2022-03-15 18:05:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2938 states have (on average 1.2859087814840027) internal successors, (3778), 2938 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:05:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 3778 transitions. [2022-03-15 18:05:08,295 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 3778 transitions. Word has length 148 [2022-03-15 18:05:08,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:05:08,295 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 3778 transitions. [2022-03-15 18:05:08,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.2419354838709675) internal successors, (201), 62 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:05:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 3778 transitions. [2022-03-15 18:05:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:05:08,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:05:08,298 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:05:08,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 18:05:08,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:05:08,499 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:05:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:05:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1895852637, now seen corresponding path program 34 times [2022-03-15 18:05:08,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:05:08,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134285442] [2022-03-15 18:05:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:05:08,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:05:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:05:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:05:10,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:05:10,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134285442] [2022-03-15 18:05:10,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134285442] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:05:10,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415829143] [2022-03-15 18:05:10,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:05:10,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:05:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:05:10,126 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:05:10,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 18:05:12,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:05:12,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:05:12,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:05:12,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:05:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:05:12,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:05:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:05:13,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415829143] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:05:13,118 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:05:13,119 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:05:13,119 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1474582626] [2022-03-15 18:05:13,119 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:05:13,153 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:05:13,693 INFO L252 McrAutomatonBuilder]: Finished intersection with 272 states and 394 transitions. [2022-03-15 18:05:13,693 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:05:14,775 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:05:14,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:05:14,776 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:05:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:05:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:05:14,776 INFO L87 Difference]: Start difference. First operand 2939 states and 3778 transitions. Second operand has 63 states, 62 states have (on average 3.2096774193548385) internal successors, (199), 62 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:05:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:05:49,694 INFO L93 Difference]: Finished difference Result 14325 states and 20999 transitions. [2022-03-15 18:05:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2022-03-15 18:05:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.2096774193548385) internal successors, (199), 62 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:05:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:05:49,722 INFO L225 Difference]: With dead ends: 14325 [2022-03-15 18:05:49,723 INFO L226 Difference]: Without dead ends: 14323 [2022-03-15 18:05:49,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 411 SyntacticMatches, 6 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27261 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1059, Invalid=86853, Unknown=0, NotChecked=0, Total=87912 [2022-03-15 18:05:49,730 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 939 mSDsluCounter, 62253 mSDsCounter, 0 mSdLazyCounter, 97472 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 97726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 97472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:05:49,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 21 Invalid, 97726 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [254 Valid, 97472 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time] [2022-03-15 18:05:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14323 states. [2022-03-15 18:05:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 2945. [2022-03-15 18:05:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 1.2856657608695652) internal successors, (3785), 2944 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:05:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 3785 transitions. [2022-03-15 18:05:49,827 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 3785 transitions. Word has length 148 [2022-03-15 18:05:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:05:49,828 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 3785 transitions. [2022-03-15 18:05:49,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.2096774193548385) internal successors, (199), 62 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:05:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 3785 transitions. [2022-03-15 18:05:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:05:49,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:05:49,832 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:05:49,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-15 18:05:50,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-15 18:05:50,046 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:05:50,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:05:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1615777757, now seen corresponding path program 35 times [2022-03-15 18:05:50,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:05:50,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954790259] [2022-03-15 18:05:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:05:50,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:05:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:05:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:05:51,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:05:51,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954790259] [2022-03-15 18:05:51,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954790259] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:05:51,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456456396] [2022-03-15 18:05:51,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:05:51,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:05:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:05:51,721 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:05:51,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 18:05:52,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 18:05:52,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:05:52,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:05:52,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:05:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:05:52,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:05:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:05:53,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456456396] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:05:53,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:05:53,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:05:53,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [565065927] [2022-03-15 18:05:53,296 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:05:53,330 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:05:53,810 INFO L252 McrAutomatonBuilder]: Finished intersection with 268 states and 386 transitions. [2022-03-15 18:05:53,810 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:05:54,740 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:05:54,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:05:54,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:05:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:05:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:05:54,742 INFO L87 Difference]: Start difference. First operand 2945 states and 3785 transitions. Second operand has 63 states, 62 states have (on average 3.1774193548387095) internal successors, (197), 62 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:06:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:06:29,965 INFO L93 Difference]: Finished difference Result 14343 states and 21024 transitions. [2022-03-15 18:06:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2022-03-15 18:06:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.1774193548387095) internal successors, (197), 62 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:06:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:06:29,987 INFO L225 Difference]: With dead ends: 14343 [2022-03-15 18:06:29,988 INFO L226 Difference]: Without dead ends: 14341 [2022-03-15 18:06:29,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 407 SyntacticMatches, 6 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27495 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1063, Invalid=87443, Unknown=0, NotChecked=0, Total=88506 [2022-03-15 18:06:29,992 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 962 mSDsluCounter, 62489 mSDsCounter, 0 mSdLazyCounter, 97833 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 98088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 97833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-03-15 18:06:29,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 21 Invalid, 98088 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [255 Valid, 97833 Invalid, 0 Unknown, 0 Unchecked, 28.4s Time] [2022-03-15 18:06:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14341 states. [2022-03-15 18:06:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14341 to 2951. [2022-03-15 18:06:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 2950 states have (on average 1.2854237288135593) internal successors, (3792), 2950 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:06:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 3792 transitions. [2022-03-15 18:06:30,079 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 3792 transitions. Word has length 148 [2022-03-15 18:06:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:06:30,079 INFO L470 AbstractCegarLoop]: Abstraction has 2951 states and 3792 transitions. [2022-03-15 18:06:30,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.1774193548387095) internal successors, (197), 62 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:06:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 3792 transitions. [2022-03-15 18:06:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:06:30,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:06:30,083 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:06:30,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 18:06:30,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-15 18:06:30,299 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:06:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:06:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -900461917, now seen corresponding path program 36 times [2022-03-15 18:06:30,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:06:30,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389473992] [2022-03-15 18:06:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:06:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:06:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:06:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:06:32,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:06:32,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389473992] [2022-03-15 18:06:32,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389473992] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:06:32,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960661795] [2022-03-15 18:06:32,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:06:32,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:06:32,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:06:32,024 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:06:32,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 18:06:32,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-15 18:06:32,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:06:32,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:06:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:06:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:06:33,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:06:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:06:33,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960661795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:06:33,800 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:06:33,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:06:33,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [662183255] [2022-03-15 18:06:33,800 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:06:33,833 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:06:34,304 INFO L252 McrAutomatonBuilder]: Finished intersection with 264 states and 378 transitions. [2022-03-15 18:06:34,304 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:06:35,331 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:06:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:06:35,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:06:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:06:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:06:35,332 INFO L87 Difference]: Start difference. First operand 2951 states and 3792 transitions. Second operand has 63 states, 62 states have (on average 3.1451612903225805) internal successors, (195), 62 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:10,845 INFO L93 Difference]: Finished difference Result 14367 states and 21058 transitions. [2022-03-15 18:07:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2022-03-15 18:07:10,845 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.1451612903225805) internal successors, (195), 62 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:07:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:10,868 INFO L225 Difference]: With dead ends: 14367 [2022-03-15 18:07:10,869 INFO L226 Difference]: Without dead ends: 14365 [2022-03-15 18:07:10,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 403 SyntacticMatches, 6 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27730 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1067, Invalid=88035, Unknown=0, NotChecked=0, Total=89102 [2022-03-15 18:07:10,874 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 984 mSDsluCounter, 62725 mSDsCounter, 0 mSdLazyCounter, 98194 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 98450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 98194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:10,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 21 Invalid, 98450 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [256 Valid, 98194 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2022-03-15 18:07:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14365 states. [2022-03-15 18:07:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14365 to 2957. [2022-03-15 18:07:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2957 states, 2956 states have (on average 1.2851826792963463) internal successors, (3799), 2956 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2957 states to 2957 states and 3799 transitions. [2022-03-15 18:07:10,978 INFO L78 Accepts]: Start accepts. Automaton has 2957 states and 3799 transitions. Word has length 148 [2022-03-15 18:07:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:10,979 INFO L470 AbstractCegarLoop]: Abstraction has 2957 states and 3799 transitions. [2022-03-15 18:07:10,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.1451612903225805) internal successors, (195), 62 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2957 states and 3799 transitions. [2022-03-15 18:07:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:07:10,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:10,983 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:11,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 18:07:11,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-15 18:07:11,211 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash 965223715, now seen corresponding path program 37 times [2022-03-15 18:07:11,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:11,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800413997] [2022-03-15 18:07:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:11,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:13,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:13,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800413997] [2022-03-15 18:07:13,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800413997] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:13,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988476410] [2022-03-15 18:07:13,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:07:13,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:13,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:13,030 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:13,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 18:07:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:13,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:07:13,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:13,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:14,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988476410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:14,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:14,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:07:14,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1048814509] [2022-03-15 18:07:14,521 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:14,555 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:14,900 INFO L252 McrAutomatonBuilder]: Finished intersection with 260 states and 370 transitions. [2022-03-15 18:07:14,901 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:15,930 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:15,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:07:15,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:07:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:07:15,931 INFO L87 Difference]: Start difference. First operand 2957 states and 3799 transitions. Second operand has 63 states, 62 states have (on average 3.1129032258064515) internal successors, (193), 62 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:07:51,562 INFO L93 Difference]: Finished difference Result 14397 states and 21101 transitions. [2022-03-15 18:07:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 300 states. [2022-03-15 18:07:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.1129032258064515) internal successors, (193), 62 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:07:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:07:51,580 INFO L225 Difference]: With dead ends: 14397 [2022-03-15 18:07:51,580 INFO L226 Difference]: Without dead ends: 14395 [2022-03-15 18:07:51,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 399 SyntacticMatches, 6 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27966 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1071, Invalid=88629, Unknown=0, NotChecked=0, Total=89700 [2022-03-15 18:07:51,584 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1005 mSDsluCounter, 62961 mSDsCounter, 0 mSdLazyCounter, 98555 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 98812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 98555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-03-15 18:07:51,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 21 Invalid, 98812 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [257 Valid, 98555 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2022-03-15 18:07:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14395 states. [2022-03-15 18:07:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14395 to 2963. [2022-03-15 18:07:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2962 states have (on average 1.2849426063470628) internal successors, (3806), 2962 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:51,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 3806 transitions. [2022-03-15 18:07:51,655 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 3806 transitions. Word has length 148 [2022-03-15 18:07:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:07:51,656 INFO L470 AbstractCegarLoop]: Abstraction has 2963 states and 3806 transitions. [2022-03-15 18:07:51,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.1129032258064515) internal successors, (193), 62 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:07:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 3806 transitions. [2022-03-15 18:07:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:07:51,660 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:07:51,660 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:07:51,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-15 18:07:51,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 18:07:51,875 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:07:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:07:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1743617955, now seen corresponding path program 38 times [2022-03-15 18:07:51,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:07:51,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695687485] [2022-03-15 18:07:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:07:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:07:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:07:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:53,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:07:53,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695687485] [2022-03-15 18:07:53,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695687485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:07:53,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321396638] [2022-03-15 18:07:53,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:07:53,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:07:53,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:07:53,631 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:07:53,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 18:07:54,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:07:54,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:07:54,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:07:54,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:07:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:54,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:07:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:07:55,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321396638] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:07:55,156 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:07:55,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:07:55,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [71528847] [2022-03-15 18:07:55,156 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:07:55,290 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:07:55,649 INFO L252 McrAutomatonBuilder]: Finished intersection with 256 states and 362 transitions. [2022-03-15 18:07:55,649 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:07:56,523 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:07:56,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:07:56,524 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:07:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:07:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:07:56,524 INFO L87 Difference]: Start difference. First operand 2963 states and 3806 transitions. Second operand has 63 states, 62 states have (on average 3.0806451612903225) internal successors, (191), 62 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:08:32,131 INFO L93 Difference]: Finished difference Result 14433 states and 21153 transitions. [2022-03-15 18:08:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 301 states. [2022-03-15 18:08:32,132 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.0806451612903225) internal successors, (191), 62 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:08:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:08:32,150 INFO L225 Difference]: With dead ends: 14433 [2022-03-15 18:08:32,150 INFO L226 Difference]: Without dead ends: 14431 [2022-03-15 18:08:32,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 395 SyntacticMatches, 6 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28203 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1075, Invalid=89225, Unknown=0, NotChecked=0, Total=90300 [2022-03-15 18:08:32,156 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1025 mSDsluCounter, 63197 mSDsCounter, 0 mSdLazyCounter, 98916 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 99174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 98916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-03-15 18:08:32,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 21 Invalid, 99174 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [258 Valid, 98916 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2022-03-15 18:08:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14431 states. [2022-03-15 18:08:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14431 to 2969. [2022-03-15 18:08:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 1.2847035040431267) internal successors, (3813), 2968 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 3813 transitions. [2022-03-15 18:08:32,229 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 3813 transitions. Word has length 148 [2022-03-15 18:08:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:08:32,229 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 3813 transitions. [2022-03-15 18:08:32,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.0806451612903225) internal successors, (191), 62 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:08:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 3813 transitions. [2022-03-15 18:08:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:08:32,232 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:08:32,232 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:08:32,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-15 18:08:32,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 18:08:32,433 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:08:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:08:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash 539236899, now seen corresponding path program 39 times [2022-03-15 18:08:32,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:08:32,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124080125] [2022-03-15 18:08:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:08:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:08:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:08:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:08:34,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:08:34,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124080125] [2022-03-15 18:08:34,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124080125] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:08:34,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086529030] [2022-03-15 18:08:34,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 18:08:34,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:08:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:08:34,131 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:08:34,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 18:08:34,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-03-15 18:08:34,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:08:34,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:08:34,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:08:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:08:35,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:08:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:08:36,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086529030] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:08:36,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:08:36,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:08:36,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [435706563] [2022-03-15 18:08:36,006 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:08:36,090 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:08:36,450 INFO L252 McrAutomatonBuilder]: Finished intersection with 252 states and 354 transitions. [2022-03-15 18:08:36,450 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:08:37,281 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:08:37,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:08:37,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:08:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:08:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:08:37,282 INFO L87 Difference]: Start difference. First operand 2969 states and 3813 transitions. Second operand has 63 states, 62 states have (on average 3.0483870967741935) internal successors, (189), 62 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:09:13,517 INFO L93 Difference]: Finished difference Result 14475 states and 21214 transitions. [2022-03-15 18:09:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 302 states. [2022-03-15 18:09:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.0483870967741935) internal successors, (189), 62 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:09:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:09:13,536 INFO L225 Difference]: With dead ends: 14475 [2022-03-15 18:09:13,536 INFO L226 Difference]: Without dead ends: 14473 [2022-03-15 18:09:13,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 391 SyntacticMatches, 6 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28441 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1079, Invalid=89823, Unknown=0, NotChecked=0, Total=90902 [2022-03-15 18:09:13,542 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1044 mSDsluCounter, 63433 mSDsCounter, 0 mSdLazyCounter, 99277 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 99536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 99277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:09:13,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 21 Invalid, 99536 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [259 Valid, 99277 Invalid, 0 Unknown, 0 Unchecked, 29.2s Time] [2022-03-15 18:09:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14473 states. [2022-03-15 18:09:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14473 to 2975. [2022-03-15 18:09:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 1.2844653665097512) internal successors, (3820), 2974 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 3820 transitions. [2022-03-15 18:09:13,615 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 3820 transitions. Word has length 148 [2022-03-15 18:09:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:09:13,615 INFO L470 AbstractCegarLoop]: Abstraction has 2975 states and 3820 transitions. [2022-03-15 18:09:13,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.0483870967741935) internal successors, (189), 62 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 3820 transitions. [2022-03-15 18:09:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:09:13,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:09:13,618 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:09:13,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 18:09:13,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-15 18:09:13,819 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:09:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:09:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2093741219, now seen corresponding path program 40 times [2022-03-15 18:09:13,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:09:13,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944449756] [2022-03-15 18:09:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:09:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:09:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:09:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:15,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:09:15,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944449756] [2022-03-15 18:09:15,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944449756] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:09:15,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194456661] [2022-03-15 18:09:15,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 18:09:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:09:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:09:15,510 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:09:15,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 18:09:17,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 18:09:17,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:09:17,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:09:17,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:09:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:17,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:09:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:18,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194456661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:09:18,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:09:18,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:09:18,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2032985629] [2022-03-15 18:09:18,498 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:09:18,552 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:09:18,915 INFO L252 McrAutomatonBuilder]: Finished intersection with 248 states and 346 transitions. [2022-03-15 18:09:18,915 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:09:19,897 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:09:19,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:09:19,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:09:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:09:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:09:19,898 INFO L87 Difference]: Start difference. First operand 2975 states and 3820 transitions. Second operand has 63 states, 62 states have (on average 3.0161290322580645) internal successors, (187), 62 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:09:56,212 INFO L93 Difference]: Finished difference Result 14523 states and 21284 transitions. [2022-03-15 18:09:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2022-03-15 18:09:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.0161290322580645) internal successors, (187), 62 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:09:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:09:56,232 INFO L225 Difference]: With dead ends: 14523 [2022-03-15 18:09:56,232 INFO L226 Difference]: Without dead ends: 14521 [2022-03-15 18:09:56,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 387 SyntacticMatches, 6 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28680 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1083, Invalid=90423, Unknown=0, NotChecked=0, Total=91506 [2022-03-15 18:09:56,236 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1062 mSDsluCounter, 63669 mSDsCounter, 0 mSdLazyCounter, 99638 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 99898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 99638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-03-15 18:09:56,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 21 Invalid, 99898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [260 Valid, 99638 Invalid, 0 Unknown, 0 Unchecked, 29.2s Time] [2022-03-15 18:09:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14521 states. [2022-03-15 18:09:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 2981. [2022-03-15 18:09:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2980 states have (on average 1.284228187919463) internal successors, (3827), 2980 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3827 transitions. [2022-03-15 18:09:56,315 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3827 transitions. Word has length 148 [2022-03-15 18:09:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:09:56,316 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 3827 transitions. [2022-03-15 18:09:56,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.0161290322580645) internal successors, (187), 62 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:09:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3827 transitions. [2022-03-15 18:09:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:09:56,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:09:56,319 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:09:56,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-15 18:09:56,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-15 18:09:56,519 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:09:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:09:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash -393933021, now seen corresponding path program 41 times [2022-03-15 18:09:56,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:09:56,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029286728] [2022-03-15 18:09:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:09:56,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:09:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:09:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:58,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:09:58,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029286728] [2022-03-15 18:09:58,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029286728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:09:58,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677015865] [2022-03-15 18:09:58,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 18:09:58,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:09:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:09:58,126 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:09:58,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 18:09:58,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-03-15 18:09:58,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:09:58,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:09:58,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:09:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:59,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:09:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:09:59,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677015865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:09:59,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:09:59,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:09:59,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [896366820] [2022-03-15 18:09:59,775 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:09:59,812 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:10:00,418 INFO L252 McrAutomatonBuilder]: Finished intersection with 244 states and 338 transitions. [2022-03-15 18:10:00,418 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:10:01,157 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:10:01,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:10:01,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:10:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:10:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:10:01,158 INFO L87 Difference]: Start difference. First operand 2981 states and 3827 transitions. Second operand has 63 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 62 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:10:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:10:37,774 INFO L93 Difference]: Finished difference Result 14577 states and 21363 transitions. [2022-03-15 18:10:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2022-03-15 18:10:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 62 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:10:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:10:37,792 INFO L225 Difference]: With dead ends: 14577 [2022-03-15 18:10:37,792 INFO L226 Difference]: Without dead ends: 14575 [2022-03-15 18:10:37,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 383 SyntacticMatches, 6 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28920 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1087, Invalid=91025, Unknown=0, NotChecked=0, Total=92112 [2022-03-15 18:10:37,796 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1079 mSDsluCounter, 63905 mSDsCounter, 0 mSdLazyCounter, 99999 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 99999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2022-03-15 18:10:37,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 21 Invalid, 100260 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [261 Valid, 99999 Invalid, 0 Unknown, 0 Unchecked, 29.5s Time] [2022-03-15 18:10:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14575 states. [2022-03-15 18:10:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14575 to 2987. [2022-03-15 18:10:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.2839919624916276) internal successors, (3834), 2986 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:10:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3834 transitions. [2022-03-15 18:10:37,867 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3834 transitions. Word has length 148 [2022-03-15 18:10:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:10:37,867 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 3834 transitions. [2022-03-15 18:10:37,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.9838709677419355) internal successors, (185), 62 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:10:37,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3834 transitions. [2022-03-15 18:10:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:10:37,870 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:10:37,871 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:10:37,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 18:10:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-15 18:10:38,071 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:10:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:10:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 502229411, now seen corresponding path program 42 times [2022-03-15 18:10:38,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:10:38,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355268946] [2022-03-15 18:10:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:10:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:10:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:10:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:10:39,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:10:39,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355268946] [2022-03-15 18:10:39,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355268946] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:10:39,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131461656] [2022-03-15 18:10:39,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 18:10:39,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:10:39,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:10:39,672 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:10:39,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 18:10:40,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-15 18:10:40,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:10:40,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:10:40,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:10:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:10:41,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:10:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:10:41,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131461656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:10:41,574 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:10:41,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:10:41,574 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1354941290] [2022-03-15 18:10:41,574 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:10:41,608 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:10:42,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 240 states and 330 transitions. [2022-03-15 18:10:42,000 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:10:42,728 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:10:42,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:10:42,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:10:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:10:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:10:42,730 INFO L87 Difference]: Start difference. First operand 2987 states and 3834 transitions. Second operand has 63 states, 62 states have (on average 2.9516129032258065) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:19,547 INFO L93 Difference]: Finished difference Result 14637 states and 21451 transitions. [2022-03-15 18:11:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 305 states. [2022-03-15 18:11:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.9516129032258065) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:11:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:19,569 INFO L225 Difference]: With dead ends: 14637 [2022-03-15 18:11:19,569 INFO L226 Difference]: Without dead ends: 14635 [2022-03-15 18:11:19,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 379 SyntacticMatches, 6 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29161 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1091, Invalid=91629, Unknown=0, NotChecked=0, Total=92720 [2022-03-15 18:11:19,573 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1095 mSDsluCounter, 64141 mSDsCounter, 0 mSdLazyCounter, 100360 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 100360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:19,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 21 Invalid, 100622 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [262 Valid, 100360 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2022-03-15 18:11:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2022-03-15 18:11:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 2993. [2022-03-15 18:11:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2992 states have (on average 1.2837566844919786) internal successors, (3841), 2992 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 3841 transitions. [2022-03-15 18:11:19,663 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 3841 transitions. Word has length 148 [2022-03-15 18:11:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:19,663 INFO L470 AbstractCegarLoop]: Abstraction has 2993 states and 3841 transitions. [2022-03-15 18:11:19,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.9516129032258065) internal successors, (183), 62 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:11:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 3841 transitions. [2022-03-15 18:11:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:11:19,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:19,668 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:11:19,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 18:11:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:11:19,891 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 665519139, now seen corresponding path program 43 times [2022-03-15 18:11:19,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:19,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352151897] [2022-03-15 18:11:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:19,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:21,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:21,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352151897] [2022-03-15 18:11:21,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352151897] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:11:21,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132631135] [2022-03-15 18:11:21,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 18:11:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:11:21,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:11:21,479 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:11:21,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 18:11:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:22,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:11:22,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:11:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:22,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:11:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:23,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132631135] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:11:23,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:11:23,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:11:23,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [780699238] [2022-03-15 18:11:23,060 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:23,095 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:23,491 INFO L252 McrAutomatonBuilder]: Finished intersection with 236 states and 322 transitions. [2022-03-15 18:11:23,492 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:24,188 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:24,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:11:24,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:11:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:11:24,189 INFO L87 Difference]: Start difference. First operand 2993 states and 3841 transitions. Second operand has 63 states, 62 states have (on average 2.9193548387096775) internal successors, (181), 62 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:12:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:12:01,241 INFO L93 Difference]: Finished difference Result 14703 states and 21548 transitions. [2022-03-15 18:12:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2022-03-15 18:12:01,241 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.9193548387096775) internal successors, (181), 62 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 18:12:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:12:01,265 INFO L225 Difference]: With dead ends: 14703 [2022-03-15 18:12:01,266 INFO L226 Difference]: Without dead ends: 14701 [2022-03-15 18:12:01,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 375 SyntacticMatches, 6 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29403 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1095, Invalid=92235, Unknown=0, NotChecked=0, Total=93330 [2022-03-15 18:12:01,279 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1110 mSDsluCounter, 64377 mSDsCounter, 0 mSdLazyCounter, 100721 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 100721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2022-03-15 18:12:01,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 21 Invalid, 100984 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [263 Valid, 100721 Invalid, 0 Unknown, 0 Unchecked, 29.7s Time] [2022-03-15 18:12:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14701 states. [2022-03-15 18:12:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14701 to 2999. [2022-03-15 18:12:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2998 states have (on average 1.2835223482321547) internal successors, (3848), 2998 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:12:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3848 transitions. [2022-03-15 18:12:01,447 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3848 transitions. Word has length 148 [2022-03-15 18:12:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:12:01,448 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 3848 transitions. [2022-03-15 18:12:01,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.9193548387096775) internal successors, (181), 62 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 18:12:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3848 transitions. [2022-03-15 18:12:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 18:12:01,452 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:12:01,452 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:12:01,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-15 18:12:01,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:12:01,654 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:12:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:12:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1616371363, now seen corresponding path program 44 times [2022-03-15 18:12:01,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:12:01,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658625118] [2022-03-15 18:12:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:12:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:12:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:12:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:12:03,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:12:03,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658625118] [2022-03-15 18:12:03,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658625118] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 18:12:03,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523132321] [2022-03-15 18:12:03,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 18:12:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 18:12:03,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:12:03,328 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 18:12:03,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 18:12:03,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 18:12:03,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 18:12:03,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-15 18:12:03,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 18:12:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:12:04,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 18:12:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:12:04,894 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523132321] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 18:12:04,894 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 18:12:04,894 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-03-15 18:12:04,894 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1485810603] [2022-03-15 18:12:04,894 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:12:04,929 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:12:05,284 INFO L252 McrAutomatonBuilder]: Finished intersection with 232 states and 314 transitions. [2022-03-15 18:12:05,284 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:12:05,913 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:12:05,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 18:12:05,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:12:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 18:12:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 18:12:05,914 INFO L87 Difference]: Start difference. First operand 2999 states and 3848 transitions. Second operand has 63 states, 62 states have (on average 2.8870967741935485) internal successors, (179), 62 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 18:12:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-03-15 18:12:33,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 371 SyntacticMatches, 6 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17955 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=883, Invalid=62873, Unknown=0, NotChecked=0, Total=63756 [2022-03-15 18:12:33,724 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 801 mSDsluCounter, 50079 mSDsCounter, 0 mSdLazyCounter, 77191 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 77381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 77191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-03-15 18:12:33,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 20 Invalid, 77381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 77191 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2022-03-15 18:12:33,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-03-15 18:12:33,740 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 18:12:33,740 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 18:12:33,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-15 18:12:33,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-15 18:12:33,927 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (2999states) and FLOYD_HOARE automaton (currently 231 states, 63 states before enhancement),while ReachableStatesComputation was computing reachable states (7985 states constructed, input type IntersectNwa). [2022-03-15 18:12:33,929 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-15 18:12:33,930 INFO L732 BasicCegarLoop]: Path program histogram: [44, 1, 1] [2022-03-15 18:12:33,932 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 18:12:33,932 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 18:12:33,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 06:12:33 BasicIcfg [2022-03-15 18:12:33,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 18:12:33,934 INFO L158 Benchmark]: Toolchain (without parser) took 672967.83ms. Allocated memory was 187.7MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 132.8MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-03-15 18:12:33,934 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory was 152.1MB in the beginning and 152.0MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 18:12:33,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.68ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 132.6MB in the beginning and 174.3MB in the end (delta: -41.7MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-03-15 18:12:33,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.37ms. Allocated memory is still 225.4MB. Free memory was 173.9MB in the beginning and 171.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 18:12:33,935 INFO L158 Benchmark]: Boogie Preprocessor took 23.09ms. Allocated memory is still 225.4MB. Free memory was 171.8MB in the beginning and 170.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 18:12:33,935 INFO L158 Benchmark]: RCFGBuilder took 408.04ms. Allocated memory is still 225.4MB. Free memory was 170.1MB in the beginning and 157.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 18:12:33,935 INFO L158 Benchmark]: TraceAbstraction took 671923.73ms. Allocated memory was 225.4MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 157.1MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-03-15 18:12:33,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory was 152.1MB in the beginning and 152.0MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 563.68ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 132.6MB in the beginning and 174.3MB in the end (delta: -41.7MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.37ms. Allocated memory is still 225.4MB. Free memory was 173.9MB in the beginning and 171.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.09ms. Allocated memory is still 225.4MB. Free memory was 171.8MB in the beginning and 170.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 408.04ms. Allocated memory is still 225.4MB. Free memory was 170.1MB in the beginning and 157.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 671923.73ms. Allocated memory was 225.4MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 157.1MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 94 PlacesBefore, 19 PlacesAfterwards, 97 TransitionsBefore, 17 TransitionsAfterwards, 722 CoEnabledTransitionPairs, 6 FixpointIterations, 53 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 93 TotalNumberOfCompositions, 934 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 771, positive: 713, positive conditional: 0, positive unconditional: 713, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 398, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 771, positive: 328, positive conditional: 0, positive unconditional: 328, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 398, unknown conditional: 0, unknown unconditional: 398] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (2999states) and FLOYD_HOARE automaton (currently 231 states, 63 states before enhancement),while ReachableStatesComputation was computing reachable states (7985 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (2999states) and FLOYD_HOARE automaton (currently 231 states, 63 states before enhancement),while ReachableStatesComputation was computing reachable states (7985 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 110 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 671.8s, OverallIterations: 46, TraceHistogramMax: 20, PathProgramHistogramMax: 44, EmptinessCheckTime: 0.2s, AutomataDifference: 540.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19371 SdHoareTripleChecker+Valid, 436.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19371 mSDsluCounter, 1083 SdHoareTripleChecker+Invalid, 359.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 947410 mSDsCounter, 4206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1486664 IncrementalHoareTripleChecker+Invalid, 1490870 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4206 mSolverCounterUnsat, 406 mSDtfsCounter, 1486664 mSolverCounterSat, 2.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18065 GetRequests, 13052 SyntacticMatches, 103 SemanticMatches, 4910 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409039 ImplicationChecksByTransitivity, 116.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5485occurred in iteration=31, InterpolantAutomatonStates: 4576, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 45 MinimizatonAttempts, 181451 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 11.9s SatisfiabilityAnalysisTime, 53.9s InterpolantComputationTime, 9434 NumberOfCodeBlocks, 9248 NumberOfCodeBlocksAsserted, 400 NumberOfCheckSat, 13934 ConstructedInterpolants, 0 QuantifiedInterpolants, 66018 SizeOfPredicates, 600 NumberOfNonLiveVariables, 24990 ConjunctsInSsa, 2166 ConjunctsInUnsatCore, 132 InterpolantComputations, 3 PerfectInterpolantSequences, 35568/114307 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown