/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:39:15,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:39:15,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:39:15,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:39:15,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:39:15,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:39:15,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:39:15,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:39:15,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:39:15,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:39:15,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:39:15,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:39:15,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:39:15,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:39:15,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:39:15,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:39:15,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:39:15,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:39:15,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:39:15,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:39:15,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:39:15,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:39:15,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:39:15,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:39:15,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:39:15,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:39:15,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:39:15,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:39:15,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:39:15,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:39:15,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:39:15,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:39:15,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:39:15,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:39:15,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:39:15,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:39:15,721 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 [2023-01-27 23:39:15,739 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:39:15,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:39:15,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:39:15,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:39:15,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:39:15,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:39:15,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:39:15,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:15,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:39:15,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:39:15,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:39:15,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:39:15,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:39:15,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:39:15,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:39:15,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:39:15,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:39:15,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:39:15,936 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:39:15,937 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:39:15,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2023-01-27 23:39:16,763 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:39:17,001 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:39:17,001 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2023-01-27 23:39:17,011 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abded8f6c/320eb17f3c31469584ac76a7812035f2/FLAGc7d4b0a01 [2023-01-27 23:39:17,021 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abded8f6c/320eb17f3c31469584ac76a7812035f2 [2023-01-27 23:39:17,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:39:17,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:39:17,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:39:17,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:39:17,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f4858f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:39:17,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:39:17,336 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/bigshot_s.i[55202,55215] [2023-01-27 23:39:17,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,353 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:39:17,383 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/bigshot_s.i[55202,55215] [2023-01-27 23:39:17,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,427 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:39:17,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17 WrapperNode [2023-01-27 23:39:17,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:39:17,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:39:17,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,457 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-01-27 23:39:17,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:39:17,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:39:17,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:39:17,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:39:17,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:39:17,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:17,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:17,505 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) [2023-01-27 23:39:17,525 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 [2023-01-27 23:39:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:39:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:39:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-01-27 23:39:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:39:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:39:17,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:39:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:39:17,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:39:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:39:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 23:39:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:39:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:39:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:39:17,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:39:17,539 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:39:17,630 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:39:17,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:39:17,777 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:39:17,781 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:39:17,781 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-27 23:39:17,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:17 BoogieIcfgContainer [2023-01-27 23:39:17,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:39:17,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:39:17,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:39:17,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:39:17,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:39:17" (1/3) ... [2023-01-27 23:39:17,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62521017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (2/3) ... [2023-01-27 23:39:17,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62521017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:17" (3/3) ... [2023-01-27 23:39:17,788 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-01-27 23:39:17,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:39:17,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:39:17,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:39:17,849 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:39:17,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 190 flow [2023-01-27 23:39:17,902 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2023-01-27 23:39:17,903 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:17,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 5/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-01-27 23:39:17,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 190 flow [2023-01-27 23:39:17,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 73 transitions, 158 flow [2023-01-27 23:39:17,910 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:39:17,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 73 transitions, 158 flow [2023-01-27 23:39:17,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 73 transitions, 158 flow [2023-01-27 23:39:17,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 73 transitions, 158 flow [2023-01-27 23:39:17,941 INFO L130 PetriNetUnfolder]: 4/73 cut-off events. [2023-01-27 23:39:17,942 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:17,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 4/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-01-27 23:39:17,943 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-01-27 23:39:20,038 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-01-27 23:39:20,038 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-01-27 23:39:20,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:39:20,052 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;@2175c733, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:39:20,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:39:20,067 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-01-27 23:39:20,067 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:20,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:20,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:20,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:20,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1698875547, now seen corresponding path program 1 times [2023-01-27 23:39:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074810678] [2023-01-27 23:39:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:20,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074810678] [2023-01-27 23:39:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074810678] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:20,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:20,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281283064] [2023-01-27 23:39:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:20,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:20,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:20,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:20,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 155 [2023-01-27 23:39:20,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:20,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 155 [2023-01-27 23:39:20,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:20,331 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2023-01-27 23:39:20,331 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:20,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-01-27 23:39:20,332 INFO L137 encePairwiseOnDemand]: 153/155 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-01-27 23:39:20,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-01-27 23:39:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-01-27 23:39:20,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032258064516129 [2023-01-27 23:39:20,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-01-27 23:39:20,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-01-27 23:39:20,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:20,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-01-27 23:39:20,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,351 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 234 transitions. [2023-01-27 23:39:20,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-01-27 23:39:20,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:39:20,354 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-01-27 23:39:20,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-01-27 23:39:20,357 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-01-27 23:39:20,357 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-01-27 23:39:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:20,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:20,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:39:20,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:20,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1109150181, now seen corresponding path program 1 times [2023-01-27 23:39:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:20,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603787826] [2023-01-27 23:39:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:20,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:20,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603787826] [2023-01-27 23:39:20,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603787826] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:20,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:20,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:39:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572669930] [2023-01-27 23:39:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:39:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:39:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:39:20,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 155 [2023-01-27 23:39:20,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:20,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 155 [2023-01-27 23:39:20,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:20,765 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-01-27 23:39:20,765 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:39:20,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 2 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-01-27 23:39:20,766 INFO L137 encePairwiseOnDemand]: 151/155 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-01-27 23:39:20,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2023-01-27 23:39:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:39:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:39:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-01-27 23:39:20,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36612903225806454 [2023-01-27 23:39:20,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-01-27 23:39:20,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-01-27 23:39:20,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:20,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-01-27 23:39:20,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,775 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,775 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 4 states and 227 transitions. [2023-01-27 23:39:20,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2023-01-27 23:39:20,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:20,776 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 60 flow [2023-01-27 23:39:20,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-01-27 23:39:20,777 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-01-27 23:39:20,777 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 60 flow [2023-01-27 23:39:20,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:20,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:20,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:39:20,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:20,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -18079033, now seen corresponding path program 1 times [2023-01-27 23:39:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:20,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536295208] [2023-01-27 23:39:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536295208] [2023-01-27 23:39:21,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536295208] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766870998] [2023-01-27 23:39:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:21,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:21,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:21,191 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) [2023-01-27 23:39:21,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:39:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:21,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-27 23:39:21,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:21,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:21,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:21,352 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-27 23:39:21,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-27 23:39:21,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:21,526 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 23:39:21,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:39:21,579 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:21,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:21,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766870998] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:21,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-01-27 23:39:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035955659] [2023-01-27 23:39:21,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:21,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:39:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:21,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:39:21,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:39:21,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 155 [2023-01-27 23:39:21,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 60 flow. Second operand has 18 states, 18 states have (on average 42.0) internal successors, (756), 18 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:21,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:21,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 155 [2023-01-27 23:39:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:22,060 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2023-01-27 23:39:22,060 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-27 23:39:22,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 115. Up to 14 conditions per place. [2023-01-27 23:39:22,061 INFO L137 encePairwiseOnDemand]: 150/155 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-01-27 23:39:22,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 165 flow [2023-01-27 23:39:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 393 transitions. [2023-01-27 23:39:22,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2817204301075269 [2023-01-27 23:39:22,062 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 393 transitions. [2023-01-27 23:39:22,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 393 transitions. [2023-01-27 23:39:22,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:22,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 393 transitions. [2023-01-27 23:39:22,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,066 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,066 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 60 flow. Second operand 9 states and 393 transitions. [2023-01-27 23:39:22,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 165 flow [2023-01-27 23:39:22,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 163 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:22,067 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 104 flow [2023-01-27 23:39:22,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-01-27 23:39:22,068 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-01-27 23:39:22,068 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 104 flow [2023-01-27 23:39:22,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.0) internal successors, (756), 18 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:22,068 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:22,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:22,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:22,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:22,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash -53489865, now seen corresponding path program 2 times [2023-01-27 23:39:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:22,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664066248] [2023-01-27 23:39:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:22,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:22,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664066248] [2023-01-27 23:39:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664066248] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084030118] [2023-01-27 23:39:22,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:39:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:22,707 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) [2023-01-27 23:39:22,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:39:22,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:39:22,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:22,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 23:39:22,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:22,832 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2023-01-27 23:39:22,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 53 [2023-01-27 23:39:22,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:22,875 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:39:22,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-27 23:39:22,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:22,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:22,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:22,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:23,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:23,070 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-01-27 23:39:23,107 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-27 23:39:23,112 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-01-27 23:39:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-01-27 23:39:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084030118] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:23,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-01-27 23:39:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98480572] [2023-01-27 23:39:23,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:23,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 23:39:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 23:39:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=489, Unknown=6, NotChecked=138, Total=702 [2023-01-27 23:39:23,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 155 [2023-01-27 23:39:23,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 104 flow. Second operand has 27 states, 27 states have (on average 41.629629629629626) internal successors, (1124), 27 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:23,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:23,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 155 [2023-01-27 23:39:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:25,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:39:25,897 INFO L130 PetriNetUnfolder]: 15/50 cut-off events. [2023-01-27 23:39:25,897 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-27 23:39:25,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 50 events. 15/50 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 1 based on Foata normal form. 3/53 useless extension candidates. Maximal degree in co-relation 186. Up to 17 conditions per place. [2023-01-27 23:39:25,898 INFO L137 encePairwiseOnDemand]: 150/155 looper letters, 17 selfloop transitions, 14 changer transitions 5/36 dead transitions. [2023-01-27 23:39:25,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 256 flow [2023-01-27 23:39:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:39:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:39:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 518 transitions. [2023-01-27 23:39:25,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.278494623655914 [2023-01-27 23:39:25,900 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 518 transitions. [2023-01-27 23:39:25,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 518 transitions. [2023-01-27 23:39:25,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:25,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 518 transitions. [2023-01-27 23:39:25,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.166666666666664) internal successors, (518), 12 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:25,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:25,903 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:25,903 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 104 flow. Second operand 12 states and 518 transitions. [2023-01-27 23:39:25,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 256 flow [2023-01-27 23:39:25,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 220 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-01-27 23:39:25,905 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 145 flow [2023-01-27 23:39:25,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=145, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2023-01-27 23:39:25,906 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 20 predicate places. [2023-01-27 23:39:25,906 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 145 flow [2023-01-27 23:39:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 41.629629629629626) internal successors, (1124), 27 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:25,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:25,907 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:25,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:26,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 23:39:26,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:26,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1658603715, now seen corresponding path program 3 times [2023-01-27 23:39:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:26,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835546213] [2023-01-27 23:39:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835546213] [2023-01-27 23:39:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835546213] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418676318] [2023-01-27 23:39:26,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:39:26,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:26,470 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) [2023-01-27 23:39:26,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:39:26,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 23:39:26,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:26,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-27 23:39:26,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:26,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:26,610 INFO L321 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-01-27 23:39:26,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 40 [2023-01-27 23:39:26,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:26,761 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 23:39:26,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:39:26,801 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:26,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:26,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:26,852 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:26,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:26,895 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:26,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:26,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:26,942 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:26,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:26,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:26,988 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:26,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:27,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:40:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:35,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418676318] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:40:35,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:40:35,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2023-01-27 23:40:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541850779] [2023-01-27 23:40:35,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:40:35,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 23:40:35,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 23:40:35,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=814, Unknown=35, NotChecked=0, Total=992 [2023-01-27 23:40:35,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 155 [2023-01-27 23:40:35,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 145 flow. Second operand has 32 states, 32 states have (on average 41.59375) internal successors, (1331), 32 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:35,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:35,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 155 [2023-01-27 23:40:35,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:36,408 INFO L130 PetriNetUnfolder]: 11/40 cut-off events. [2023-01-27 23:40:36,409 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-01-27 23:40:36,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 40 events. 11/40 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 1 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 134. Up to 12 conditions per place. [2023-01-27 23:40:36,409 INFO L137 encePairwiseOnDemand]: 150/155 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-01-27 23:40:36,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 28 transitions, 197 flow [2023-01-27 23:40:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 23:40:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 23:40:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 427 transitions. [2023-01-27 23:40:36,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27548387096774196 [2023-01-27 23:40:36,411 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 427 transitions. [2023-01-27 23:40:36,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 427 transitions. [2023-01-27 23:40:36,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:36,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 427 transitions. [2023-01-27 23:40:36,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.7) internal successors, (427), 10 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:36,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:36,414 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:36,414 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 145 flow. Second operand 10 states and 427 transitions. [2023-01-27 23:40:36,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 28 transitions, 197 flow [2023-01-27 23:40:36,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 151 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-01-27 23:40:36,415 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-01-27 23:40:36,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-01-27 23:40:36,415 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 17 predicate places. [2023-01-27 23:40:36,415 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-01-27 23:40:36,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 41.59375) internal successors, (1331), 32 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:36,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:40:36,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:40:36,418 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:40:36,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:40:36,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:36,624 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-01-27 23:40:36,626 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:40:36,626 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:40:36,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:40:36 BasicIcfg [2023-01-27 23:40:36,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:40:36,628 INFO L158 Benchmark]: Toolchain (without parser) took 79604.11ms. Allocated memory was 390.1MB in the beginning and 469.8MB in the end (delta: 79.7MB). Free memory was 358.5MB in the beginning and 271.6MB in the end (delta: 86.9MB). Peak memory consumption was 168.8MB. Max. memory is 16.0GB. [2023-01-27 23:40:36,628 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:40:36,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.52ms. Allocated memory is still 390.1MB. Free memory was 358.2MB in the beginning and 326.3MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-27 23:40:36,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.41ms. Allocated memory is still 390.1MB. Free memory was 325.8MB in the beginning and 323.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:40:36,629 INFO L158 Benchmark]: Boogie Preprocessor took 23.36ms. Allocated memory is still 390.1MB. Free memory was 323.7MB in the beginning and 322.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:40:36,629 INFO L158 Benchmark]: RCFGBuilder took 301.39ms. Allocated memory is still 390.1MB. Free memory was 322.1MB in the beginning and 307.9MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 23:40:36,629 INFO L158 Benchmark]: TraceAbstraction took 78843.89ms. Allocated memory was 390.1MB in the beginning and 469.8MB in the end (delta: 79.7MB). Free memory was 306.9MB in the beginning and 271.6MB in the end (delta: 35.2MB). Peak memory consumption was 116.3MB. Max. memory is 16.0GB. [2023-01-27 23:40:36,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 401.52ms. Allocated memory is still 390.1MB. Free memory was 358.2MB in the beginning and 326.3MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.41ms. Allocated memory is still 390.1MB. Free memory was 325.8MB in the beginning and 323.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.36ms. Allocated memory is still 390.1MB. Free memory was 323.7MB in the beginning and 322.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 301.39ms. Allocated memory is still 390.1MB. Free memory was 322.1MB in the beginning and 307.9MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 78843.89ms. Allocated memory was 390.1MB in the beginning and 469.8MB in the end (delta: 79.7MB). Free memory was 306.9MB in the beginning and 271.6MB in the end (delta: 35.2MB). Peak memory consumption was 116.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 76 PlacesBefore, 19 PlacesAfterwards, 73 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 90, independent: 86, independent conditional: 0, independent unconditional: 86, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 154, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 90, unknown conditional: 0, unknown unconditional: 90] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 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: 78.8s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 30 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 105 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 771 IncrementalHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 0 mSDtfsCounter, 771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 70.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=4, InterpolantAutomatonStates: 38, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 71.7s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 29 QuantifiedInterpolants, 2736 SizeOfPredicates, 26 NumberOfNonLiveVariables, 621 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 10/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:40:36,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...