/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:17:01,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:17:01,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:17:01,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:17:01,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:17:01,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:17:01,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:17:01,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:17:01,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:17:01,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:17:01,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:17:01,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:17:01,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:17:01,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:17:01,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:17:01,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:17:01,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:17:01,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:17:01,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:17:01,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:17:01,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:17:01,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:17:01,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:17:01,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:17:01,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 12:17:01,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:17:01,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:17:01,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:17:01,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:17:01,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:17:01,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:17:01,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:17:01,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:17:01,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:17:01,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:17:01,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:17:01,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 12:17:01,895 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:17:01,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:17:01,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:17:01,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:17:01,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:17:01,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:17:01,897 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:17:01,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:17:01,898 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:17:01,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:17:01,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:17:01,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:17:01,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:17:01,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:17:01,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:17:01,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:17:01,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:17:01,900 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:17:02,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:17:02,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:17:02,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:17:02,115 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:17:02,115 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:17:02,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-01-28 12:17:03,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:17:03,249 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:17:03,249 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-01-28 12:17:03,261 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388a50065/d9a47c01fb8842b4986b51114cfe1412/FLAGc15da830f [2023-01-28 12:17:03,606 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388a50065/d9a47c01fb8842b4986b51114cfe1412 [2023-01-28 12:17:03,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:17:03,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:17:03,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:17:03,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:17:03,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:17:03,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:03,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4766c907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03, skipping insertion in model container [2023-01-28 12:17:03,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:03,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:17:03,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:17:03,906 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-01-28 12:17:03,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:17:03,918 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:17:03,944 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-01-28 12:17:03,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:17:03,980 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:17:03,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03 WrapperNode [2023-01-28 12:17:03,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:17:03,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:17:03,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:17:03,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:17:03,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:03,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,007 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-01-28 12:17:04,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:17:04,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:17:04,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:17:04,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:17:04,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:17:04,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:17:04,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:17:04,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:17:04,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (1/1) ... [2023-01-28 12:17:04,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:17:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:04,048 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) [2023-01-28 12:17:04,052 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 [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:17:04,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:17:04,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:17:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:17:04,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:17:04,074 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 12:17:04,156 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:17:04,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:17:04,351 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:17:04,356 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:17:04,357 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 12:17:04,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:17:04 BoogieIcfgContainer [2023-01-28 12:17:04,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:17:04,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:17:04,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:17:04,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:17:04,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:17:03" (1/3) ... [2023-01-28 12:17:04,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d55b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:17:04, skipping insertion in model container [2023-01-28 12:17:04,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:03" (2/3) ... [2023-01-28 12:17:04,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d55b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:17:04, skipping insertion in model container [2023-01-28 12:17:04,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:17:04" (3/3) ... [2023-01-28 12:17:04,363 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-01-28 12:17:04,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:17:04,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:17:04,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:17:04,416 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:17:04,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2023-01-28 12:17:04,488 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-28 12:17:04,488 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:04,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2023-01-28 12:17:04,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2023-01-28 12:17:04,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:04,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:17:04,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:04,504 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:04,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 248 flow [2023-01-28 12:17:04,522 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-01-28 12:17:04,522 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:04,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 8/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-01-28 12:17:04,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2023-01-28 12:17:08,655 INFO L134 LiptonReduction]: Checked pairs total: 4363 [2023-01-28 12:17:08,656 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-01-28 12:17:08,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:17:08,670 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cd21eda, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:17:08,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:17:08,675 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2023-01-28 12:17:08,675 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:08,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:08,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:08,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:08,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -373663314, now seen corresponding path program 1 times [2023-01-28 12:17:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:08,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330820808] [2023-01-28 12:17:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:08,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:08,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330820808] [2023-01-28 12:17:08,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330820808] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:08,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:08,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:08,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935774717] [2023-01-28 12:17:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:08,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:08,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-28 12:17:08,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:08,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:08,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-28 12:17:08,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:09,080 INFO L130 PetriNetUnfolder]: 219/470 cut-off events. [2023-01-28 12:17:09,081 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 12:17:09,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 470 events. 219/470 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2196 event pairs, 87 based on Foata normal form. 28/432 useless extension candidates. Maximal degree in co-relation 772. Up to 225 conditions per place. [2023-01-28 12:17:09,087 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 34 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 12:17:09,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 173 flow [2023-01-28 12:17:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-01-28 12:17:09,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-01-28 12:17:09,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-01-28 12:17:09,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-01-28 12:17:09,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:09,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-01-28 12:17:09,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,116 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-01-28 12:17:09,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 173 flow [2023-01-28 12:17:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:17:09,120 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2023-01-28 12:17:09,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-01-28 12:17:09,125 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-01-28 12:17:09,125 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2023-01-28 12:17:09,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:09,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:09,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:17:09,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:09,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:09,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2115918277, now seen corresponding path program 1 times [2023-01-28 12:17:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:09,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310013673] [2023-01-28 12:17:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:09,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:09,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:09,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310013673] [2023-01-28 12:17:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310013673] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140872111] [2023-01-28 12:17:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:09,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 224 [2023-01-28 12:17:09,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:09,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 224 [2023-01-28 12:17:09,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:09,287 INFO L130 PetriNetUnfolder]: 357/694 cut-off events. [2023-01-28 12:17:09,287 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-01-28 12:17:09,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 694 events. 357/694 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3192 event pairs, 141 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 442. Up to 347 conditions per place. [2023-01-28 12:17:09,289 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-01-28 12:17:09,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 191 flow [2023-01-28 12:17:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-01-28 12:17:09,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-01-28 12:17:09,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-01-28 12:17:09,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-01-28 12:17:09,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:09,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-01-28 12:17:09,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,293 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 376 transitions. [2023-01-28 12:17:09,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 191 flow [2023-01-28 12:17:09,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:09,295 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2023-01-28 12:17:09,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-01-28 12:17:09,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-01-28 12:17:09,295 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2023-01-28 12:17:09,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:09,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:09,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:17:09,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:09,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash 26892520, now seen corresponding path program 1 times [2023-01-28 12:17:09,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:09,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074548130] [2023-01-28 12:17:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074548130] [2023-01-28 12:17:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074548130] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:09,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:09,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052881072] [2023-01-28 12:17:09,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:09,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 224 [2023-01-28 12:17:09,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:09,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 224 [2023-01-28 12:17:09,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:09,525 INFO L130 PetriNetUnfolder]: 309/688 cut-off events. [2023-01-28 12:17:09,526 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 12:17:09,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 688 events. 309/688 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3367 event pairs, 105 based on Foata normal form. 80/740 useless extension candidates. Maximal degree in co-relation 413. Up to 316 conditions per place. [2023-01-28 12:17:09,529 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 25 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-01-28 12:17:09,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 183 flow [2023-01-28 12:17:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-01-28 12:17:09,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2023-01-28 12:17:09,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-01-28 12:17:09,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-01-28 12:17:09,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:09,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-01-28 12:17:09,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,534 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 3 states and 346 transitions. [2023-01-28 12:17:09,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 183 flow [2023-01-28 12:17:09,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:09,536 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 102 flow [2023-01-28 12:17:09,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-01-28 12:17:09,537 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-28 12:17:09,537 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 102 flow [2023-01-28 12:17:09,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:09,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:09,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:17:09,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:09,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1826989588, now seen corresponding path program 2 times [2023-01-28 12:17:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:09,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71655316] [2023-01-28 12:17:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71655316] [2023-01-28 12:17:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71655316] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:09,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593209441] [2023-01-28 12:17:09,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:17:09,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:09,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:09,621 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) [2023-01-28 12:17:09,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:17:09,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:17:09,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:09,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 12:17:09,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:09,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593209441] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:09,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-28 12:17:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361638088] [2023-01-28 12:17:09,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:09,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 12:17:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 12:17:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 12:17:09,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-01-28 12:17:09,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:09,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:09,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-01-28 12:17:09,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:10,051 INFO L130 PetriNetUnfolder]: 509/1236 cut-off events. [2023-01-28 12:17:10,051 INFO L131 PetriNetUnfolder]: For 350/356 co-relation queries the response was YES. [2023-01-28 12:17:10,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 1236 events. 509/1236 cut-off events. For 350/356 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6749 event pairs, 42 based on Foata normal form. 96/1274 useless extension candidates. Maximal degree in co-relation 673. Up to 246 conditions per place. [2023-01-28 12:17:10,060 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 113 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2023-01-28 12:17:10,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 147 transitions, 789 flow [2023-01-28 12:17:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 12:17:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 12:17:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1541 transitions. [2023-01-28 12:17:10,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291895604395604 [2023-01-28 12:17:10,063 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1541 transitions. [2023-01-28 12:17:10,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1541 transitions. [2023-01-28 12:17:10,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:10,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1541 transitions. [2023-01-28 12:17:10,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.53846153846153) internal successors, (1541), 13 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,085 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,086 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 102 flow. Second operand 13 states and 1541 transitions. [2023-01-28 12:17:10,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 147 transitions, 789 flow [2023-01-28 12:17:10,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 147 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:10,091 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 325 flow [2023-01-28 12:17:10,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=325, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-01-28 12:17:10,092 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2023-01-28 12:17:10,092 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 325 flow [2023-01-28 12:17:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:10,093 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:10,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 12:17:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:10,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:10,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1311970565, now seen corresponding path program 3 times [2023-01-28 12:17:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607320853] [2023-01-28 12:17:10,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:10,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 12:17:10,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607320853] [2023-01-28 12:17:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607320853] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073128516] [2023-01-28 12:17:10,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:17:10,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:10,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:10,373 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) [2023-01-28 12:17:10,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:17:10,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 12:17:10,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:10,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 12:17:10,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 12:17:10,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073128516] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:10,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:17:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 12:17:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315367088] [2023-01-28 12:17:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:17:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:17:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 12:17:10,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-01-28 12:17:10,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:10,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-01-28 12:17:10,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:10,726 INFO L130 PetriNetUnfolder]: 800/1629 cut-off events. [2023-01-28 12:17:10,727 INFO L131 PetriNetUnfolder]: For 3035/3035 co-relation queries the response was YES. [2023-01-28 12:17:10,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4715 conditions, 1629 events. 800/1629 cut-off events. For 3035/3035 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8057 event pairs, 161 based on Foata normal form. 0/1513 useless extension candidates. Maximal degree in co-relation 3446. Up to 652 conditions per place. [2023-01-28 12:17:10,734 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 90 selfloop transitions, 8 changer transitions 1/101 dead transitions. [2023-01-28 12:17:10,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 779 flow [2023-01-28 12:17:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:17:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:17:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-01-28 12:17:10,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491071428571429 [2023-01-28 12:17:10,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-01-28 12:17:10,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-01-28 12:17:10,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:10,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-01-28 12:17:10,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,740 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 325 flow. Second operand 5 states and 615 transitions. [2023-01-28 12:17:10,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 779 flow [2023-01-28 12:17:10,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 727 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:10,747 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 345 flow [2023-01-28 12:17:10,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-01-28 12:17:10,749 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-01-28 12:17:10,750 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 345 flow [2023-01-28 12:17:10,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:10,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:10,750 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:10,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:10,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:10,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:10,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1361604361, now seen corresponding path program 4 times [2023-01-28 12:17:10,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:10,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867773368] [2023-01-28 12:17:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:10,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 12:17:11,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:11,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867773368] [2023-01-28 12:17:11,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867773368] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:11,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884971083] [2023-01-28 12:17:11,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:17:11,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:11,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:11,043 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) [2023-01-28 12:17:11,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 12:17:11,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:17:11,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:11,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 12:17:11,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 12:17:11,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 12:17:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884971083] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:11,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-01-28 12:17:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417413455] [2023-01-28 12:17:11,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 12:17:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 12:17:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 12:17:11,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-28 12:17:11,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:11,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-28 12:17:11,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:11,358 INFO L130 PetriNetUnfolder]: 639/1480 cut-off events. [2023-01-28 12:17:11,359 INFO L131 PetriNetUnfolder]: For 3086/3104 co-relation queries the response was YES. [2023-01-28 12:17:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 1480 events. 639/1480 cut-off events. For 3086/3104 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7912 event pairs, 118 based on Foata normal form. 46/1518 useless extension candidates. Maximal degree in co-relation 3476. Up to 310 conditions per place. [2023-01-28 12:17:11,365 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 75 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2023-01-28 12:17:11,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 737 flow [2023-01-28 12:17:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:17:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:17:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 634 transitions. [2023-01-28 12:17:11,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660714285714286 [2023-01-28 12:17:11,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 634 transitions. [2023-01-28 12:17:11,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 634 transitions. [2023-01-28 12:17:11,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 634 transitions. [2023-01-28 12:17:11,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,369 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 345 flow. Second operand 5 states and 634 transitions. [2023-01-28 12:17:11,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 737 flow [2023-01-28 12:17:11,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 737 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 12:17:11,374 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 389 flow [2023-01-28 12:17:11,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-01-28 12:17:11,375 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-01-28 12:17:11,375 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 389 flow [2023-01-28 12:17:11,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:11,375 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:11,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:11,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:11,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1041839656, now seen corresponding path program 5 times [2023-01-28 12:17:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529024659] [2023-01-28 12:17:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-01-28 12:17:11,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529024659] [2023-01-28 12:17:11,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529024659] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:11,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:11,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:17:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502889680] [2023-01-28 12:17:11,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:11,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:11,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:11,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:11,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 224 [2023-01-28 12:17:11,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:11,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 224 [2023-01-28 12:17:11,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:11,708 INFO L130 PetriNetUnfolder]: 528/1113 cut-off events. [2023-01-28 12:17:11,709 INFO L131 PetriNetUnfolder]: For 2847/2847 co-relation queries the response was YES. [2023-01-28 12:17:11,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 1113 events. 528/1113 cut-off events. For 2847/2847 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5004 event pairs, 164 based on Foata normal form. 46/1159 useless extension candidates. Maximal degree in co-relation 3272. Up to 813 conditions per place. [2023-01-28 12:17:11,714 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 54 selfloop transitions, 3 changer transitions 3/62 dead transitions. [2023-01-28 12:17:11,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 485 flow [2023-01-28 12:17:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-01-28 12:17:11,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610119047619048 [2023-01-28 12:17:11,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-01-28 12:17:11,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-01-28 12:17:11,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:11,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-01-28 12:17:11,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,718 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 389 flow. Second operand 3 states and 377 transitions. [2023-01-28 12:17:11,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 485 flow [2023-01-28 12:17:11,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 462 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-01-28 12:17:11,722 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 288 flow [2023-01-28 12:17:11,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-01-28 12:17:11,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-01-28 12:17:11,723 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 288 flow [2023-01-28 12:17:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:11,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:11,723 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:17:11,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:11,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1414803876, now seen corresponding path program 6 times [2023-01-28 12:17:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241246554] [2023-01-28 12:17:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 12:17:11,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241246554] [2023-01-28 12:17:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241246554] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700239891] [2023-01-28 12:17:11,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:17:11,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:11,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:11,851 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) [2023-01-28 12:17:11,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 12:17:11,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 12:17:11,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:17:12,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 12:17:12,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-01-28 12:17:12,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700239891] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:17:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-01-28 12:17:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769942218] [2023-01-28 12:17:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:12,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 12:17:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 12:17:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 12:17:12,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 12:17:12,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:12,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 12:17:12,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:12,186 INFO L130 PetriNetUnfolder]: 472/1003 cut-off events. [2023-01-28 12:17:12,186 INFO L131 PetriNetUnfolder]: For 1814/1814 co-relation queries the response was YES. [2023-01-28 12:17:12,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 1003 events. 472/1003 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4334 event pairs, 123 based on Foata normal form. 18/1021 useless extension candidates. Maximal degree in co-relation 1477. Up to 429 conditions per place. [2023-01-28 12:17:12,191 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-01-28 12:17:12,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 580 flow [2023-01-28 12:17:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:17:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:17:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-01-28 12:17:12,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2023-01-28 12:17:12,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-01-28 12:17:12,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-01-28 12:17:12,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:12,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-01-28 12:17:12,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,196 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,196 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 288 flow. Second operand 6 states and 708 transitions. [2023-01-28 12:17:12,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 580 flow [2023-01-28 12:17:12,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:12,199 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 332 flow [2023-01-28 12:17:12,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-01-28 12:17:12,200 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-01-28 12:17:12,200 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 332 flow [2023-01-28 12:17:12,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:12,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:12,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:12,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:12,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2055301186, now seen corresponding path program 7 times [2023-01-28 12:17:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467619697] [2023-01-28 12:17:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 12:17:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467619697] [2023-01-28 12:17:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467619697] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:17:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837583556] [2023-01-28 12:17:12,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:17:12,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:12,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:12,584 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) [2023-01-28 12:17:12,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 12:17:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:12,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 12:17:12,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 12:17:12,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 12:17:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837583556] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:12,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-01-28 12:17:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836373747] [2023-01-28 12:17:12,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 12:17:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 12:17:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 12:17:12,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 12:17:12,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:12,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 12:17:12,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:12,939 INFO L130 PetriNetUnfolder]: 325/706 cut-off events. [2023-01-28 12:17:12,939 INFO L131 PetriNetUnfolder]: For 1613/1613 co-relation queries the response was YES. [2023-01-28 12:17:12,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 706 events. 325/706 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2564 event pairs, 90 based on Foata normal form. 22/728 useless extension candidates. Maximal degree in co-relation 1227. Up to 300 conditions per place. [2023-01-28 12:17:12,943 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 59 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2023-01-28 12:17:12,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 534 flow [2023-01-28 12:17:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:17:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:17:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 706 transitions. [2023-01-28 12:17:12,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252976190476191 [2023-01-28 12:17:12,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 706 transitions. [2023-01-28 12:17:12,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 706 transitions. [2023-01-28 12:17:12,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:12,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 706 transitions. [2023-01-28 12:17:12,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,948 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 332 flow. Second operand 6 states and 706 transitions. [2023-01-28 12:17:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 534 flow [2023-01-28 12:17:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 500 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-28 12:17:12,951 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 265 flow [2023-01-28 12:17:12,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2023-01-28 12:17:12,952 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-01-28 12:17:12,952 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 265 flow [2023-01-28 12:17:12,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:12,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:12,953 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:12,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:13,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:13,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:17:13,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1629587720, now seen corresponding path program 8 times [2023-01-28 12:17:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381962183] [2023-01-28 12:17:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 12:17:13,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 12:17:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 12:17:13,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 12:17:13,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 12:17:13,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:17:13,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:17:13,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:17:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 12:17:13,235 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-01-28 12:17:13,237 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:17:13,237 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:17:13,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:17:13 BasicIcfg [2023-01-28 12:17:13,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:17:13,295 INFO L158 Benchmark]: Toolchain (without parser) took 9685.34ms. Allocated memory was 333.4MB in the beginning and 482.3MB in the end (delta: 148.9MB). Free memory was 301.4MB in the beginning and 313.1MB in the end (delta: -11.7MB). Peak memory consumption was 140.3MB. Max. memory is 16.0GB. [2023-01-28 12:17:13,295 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:17:13,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.82ms. Allocated memory is still 333.4MB. Free memory was 300.9MB in the beginning and 274.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 12:17:13,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.82ms. Allocated memory is still 333.4MB. Free memory was 274.8MB in the beginning and 272.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:17:13,296 INFO L158 Benchmark]: Boogie Preprocessor took 18.60ms. Allocated memory is still 333.4MB. Free memory was 272.7MB in the beginning and 270.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:17:13,296 INFO L158 Benchmark]: RCFGBuilder took 330.66ms. Allocated memory is still 333.4MB. Free memory was 270.6MB in the beginning and 253.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 12:17:13,296 INFO L158 Benchmark]: TraceAbstraction took 8935.70ms. Allocated memory was 333.4MB in the beginning and 482.3MB in the end (delta: 148.9MB). Free memory was 253.3MB in the beginning and 313.1MB in the end (delta: -59.8MB). Peak memory consumption was 92.1MB. Max. memory is 16.0GB. [2023-01-28 12:17:13,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 369.82ms. Allocated memory is still 333.4MB. Free memory was 300.9MB in the beginning and 274.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.82ms. Allocated memory is still 333.4MB. Free memory was 274.8MB in the beginning and 272.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.60ms. Allocated memory is still 333.4MB. Free memory was 272.7MB in the beginning and 270.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 330.66ms. Allocated memory is still 333.4MB. Free memory was 270.6MB in the beginning and 253.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 8935.70ms. Allocated memory was 333.4MB in the beginning and 482.3MB in the end (delta: 148.9MB). Free memory was 253.3MB in the beginning and 313.1MB in the end (delta: -59.8MB). Peak memory consumption was 92.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 117 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 30 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2172, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1031, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2172, independent: 1000, independent conditional: 0, independent unconditional: 1000, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1031, unknown conditional: 0, unknown unconditional: 1031] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1005 IncrementalHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 2 mSDtfsCounter, 1005 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 287 SyntacticMatches, 15 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=6, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 510 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 1264 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1392 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 273/350 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 proved your program to be incorrect! [2023-01-28 12:17:13,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...