/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:42:52,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:42:52,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:42:52,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:42:52,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:42:52,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:42:52,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:42:52,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:42:52,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:42:52,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:42:52,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:42:52,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:42:52,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:42:52,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:42:52,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:42:52,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:42:52,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:42:52,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:42:52,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:42:52,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:42:52,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:42:52,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:42:52,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:42:52,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:42:52,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:42:52,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:42:52,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:42:52,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:42:52,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:42:52,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:42:52,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:42:52,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:42:52,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:42:52,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:42:52,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:42:52,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:42:52,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:42:52,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:42:52,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:42:52,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:42:52,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:42:52,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:42:52,749 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:42:52,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:42:52,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:42:52,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:42:52,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:42:52,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:42:52,751 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:42:52,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:42:52,751 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:42:52,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:42:52,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:42:52,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:42:52,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:42:52,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:42:52,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:42:52,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:42:52,754 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:42:52,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:42:52,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:42:52,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:42:52,935 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:42:52,936 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:42:52,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-01-28 09:42:53,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:42:54,074 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:42:54,074 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-01-28 09:42:54,078 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a34e3565/2c6ea48944fc4e2ca5cff3caf256e6e1/FLAG899de6f9b [2023-01-28 09:42:54,474 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a34e3565/2c6ea48944fc4e2ca5cff3caf256e6e1 [2023-01-28 09:42:54,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:42:54,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:42:54,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:42:54,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:42:54,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:42:54,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf887d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54, skipping insertion in model container [2023-01-28 09:42:54,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:42:54,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:42:54,595 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-01-28 09:42:54,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:42:54,606 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:42:54,620 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-01-28 09:42:54,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:42:54,628 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:42:54,628 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:42:54,632 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:42:54,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54 WrapperNode [2023-01-28 09:42:54,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:42:54,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:42:54,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:42:54,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:42:54,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,654 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-01-28 09:42:54,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:42:54,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:42:54,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:42:54,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:42:54,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:42:54,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:42:54,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:42:54,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:42:54,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (1/1) ... [2023-01-28 09:42:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:42:54,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:42:54,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:42:54,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:42:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:42:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:42:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:42:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:42:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:42:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:42:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:42:54,725 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:42:54,806 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:42:54,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:42:55,080 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:42:55,134 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:42:55,135 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 09:42:55,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:42:55 BoogieIcfgContainer [2023-01-28 09:42:55,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:42:55,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:42:55,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:42:55,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:42:55,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:42:54" (1/3) ... [2023-01-28 09:42:55,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a19c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:42:55, skipping insertion in model container [2023-01-28 09:42:55,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:42:54" (2/3) ... [2023-01-28 09:42:55,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a19c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:42:55, skipping insertion in model container [2023-01-28 09:42:55,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:42:55" (3/3) ... [2023-01-28 09:42:55,142 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-01-28 09:42:55,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:42:55,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:42:55,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:42:55,204 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:42:55,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2023-01-28 09:42:55,271 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2023-01-28 09:42:55,272 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:42:55,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-01-28 09:42:55,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2023-01-28 09:42:55,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 156 transitions, 330 flow [2023-01-28 09:42:55,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:42:55,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 156 transitions, 330 flow [2023-01-28 09:42:55,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 156 transitions, 330 flow [2023-01-28 09:42:55,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 330 flow [2023-01-28 09:42:55,331 INFO L130 PetriNetUnfolder]: 12/156 cut-off events. [2023-01-28 09:42:55,331 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:42:55,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 12/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-01-28 09:42:55,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-28 09:42:59,782 INFO L134 LiptonReduction]: Checked pairs total: 1738 [2023-01-28 09:42:59,782 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-01-28 09:42:59,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:42:59,795 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;@46463abf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:42:59,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:42:59,800 INFO L130 PetriNetUnfolder]: 3/23 cut-off events. [2023-01-28 09:42:59,800 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:42:59,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:42:59,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:42:59,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:42:59,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:42:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1074919772, now seen corresponding path program 1 times [2023-01-28 09:42:59,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:42:59,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533484540] [2023-01-28 09:42:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:42:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:42:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:00,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533484540] [2023-01-28 09:43:00,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533484540] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:00,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:00,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:43:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390724088] [2023-01-28 09:43:00,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:00,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:43:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:43:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:43:00,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-28 09:43:00,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:00,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-28 09:43:00,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:00,179 INFO L130 PetriNetUnfolder]: 282/438 cut-off events. [2023-01-28 09:43:00,179 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-28 09:43:00,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 438 events. 282/438 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1311 event pairs, 173 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 800. Up to 356 conditions per place. [2023-01-28 09:43:00,183 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-01-28 09:43:00,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 164 flow [2023-01-28 09:43:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:43:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:43:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-01-28 09:43:00,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471299093655589 [2023-01-28 09:43:00,199 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-01-28 09:43:00,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-01-28 09:43:00,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:00,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-01-28 09:43:00,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,216 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 4 states and 592 transitions. [2023-01-28 09:43:00,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 164 flow [2023-01-28 09:43:00,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:43:00,220 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 68 flow [2023-01-28 09:43:00,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-01-28 09:43:00,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-01-28 09:43:00,224 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 68 flow [2023-01-28 09:43:00,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:00,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:00,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:43:00,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:00,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash 725544040, now seen corresponding path program 1 times [2023-01-28 09:43:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:00,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941333976] [2023-01-28 09:43:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:00,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:00,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941333976] [2023-01-28 09:43:00,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941333976] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:00,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:43:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340606738] [2023-01-28 09:43:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:00,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:43:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:43:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:43:00,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-28 09:43:00,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:00,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-28 09:43:00,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:00,439 INFO L130 PetriNetUnfolder]: 344/532 cut-off events. [2023-01-28 09:43:00,439 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-01-28 09:43:00,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 532 events. 344/532 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1709 event pairs, 221 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 397. Up to 438 conditions per place. [2023-01-28 09:43:00,442 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-01-28 09:43:00,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 178 flow [2023-01-28 09:43:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:43:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:43:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-01-28 09:43:00,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471299093655589 [2023-01-28 09:43:00,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-01-28 09:43:00,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-01-28 09:43:00,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:00,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-01-28 09:43:00,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,448 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,448 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 4 states and 592 transitions. [2023-01-28 09:43:00,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 178 flow [2023-01-28 09:43:00,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 168 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 09:43:00,450 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 76 flow [2023-01-28 09:43:00,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-01-28 09:43:00,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-01-28 09:43:00,450 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 76 flow [2023-01-28 09:43:00,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:00,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:00,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:43:00,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:00,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash -512809655, now seen corresponding path program 1 times [2023-01-28 09:43:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:00,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956246784] [2023-01-28 09:43:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:43:00,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:00,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956246784] [2023-01-28 09:43:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956246784] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:00,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:43:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483908974] [2023-01-28 09:43:00,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:00,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:43:00,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:43:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:43:00,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-28 09:43:00,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:00,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-28 09:43:00,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:00,583 INFO L130 PetriNetUnfolder]: 344/533 cut-off events. [2023-01-28 09:43:00,583 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-01-28 09:43:00,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 533 events. 344/533 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1621 event pairs, 277 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 469. Up to 533 conditions per place. [2023-01-28 09:43:00,586 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-01-28 09:43:00,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 132 flow [2023-01-28 09:43:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:43:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:43:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-01-28 09:43:00,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446122860020141 [2023-01-28 09:43:00,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-01-28 09:43:00,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-01-28 09:43:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:00,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-01-28 09:43:00,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,591 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 76 flow. Second operand 3 states and 443 transitions. [2023-01-28 09:43:00,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 132 flow [2023-01-28 09:43:00,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:43:00,593 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 82 flow [2023-01-28 09:43:00,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 09:43:00,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-01-28 09:43:00,596 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 82 flow [2023-01-28 09:43:00,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:00,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:00,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:00,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:43:00,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:00,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash -599166117, now seen corresponding path program 1 times [2023-01-28 09:43:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:00,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980343987] [2023-01-28 09:43:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:00,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:00,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980343987] [2023-01-28 09:43:00,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980343987] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842276315] [2023-01-28 09:43:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:00,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:00,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:43:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:01,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:43:01,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:01,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 09:43:01,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:01,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 85 treesize of output 61 [2023-01-28 09:43:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:01,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:01,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:01,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 89 treesize of output 65 [2023-01-28 09:43:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:01,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842276315] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:01,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 09:43:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911714695] [2023-01-28 09:43:01,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:01,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:43:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:01,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:43:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:43:01,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 331 [2023-01-28 09:43:01,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 82 flow. Second operand has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:01,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:01,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 331 [2023-01-28 09:43:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:02,509 INFO L130 PetriNetUnfolder]: 1268/1991 cut-off events. [2023-01-28 09:43:02,509 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2023-01-28 09:43:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1991 events. 1268/1991 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9306 event pairs, 162 based on Foata normal form. 4/1699 useless extension candidates. Maximal degree in co-relation 4940. Up to 506 conditions per place. [2023-01-28 09:43:02,516 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 74 selfloop transitions, 14 changer transitions 124/212 dead transitions. [2023-01-28 09:43:02,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 212 transitions, 1043 flow [2023-01-28 09:43:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 09:43:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 09:43:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2613 transitions. [2023-01-28 09:43:02,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41548735888058513 [2023-01-28 09:43:02,522 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2613 transitions. [2023-01-28 09:43:02,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2613 transitions. [2023-01-28 09:43:02,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:02,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2613 transitions. [2023-01-28 09:43:02,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.52631578947367) internal successors, (2613), 19 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:02,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:02,535 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:02,535 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 82 flow. Second operand 19 states and 2613 transitions. [2023-01-28 09:43:02,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 212 transitions, 1043 flow [2023-01-28 09:43:02,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 212 transitions, 1039 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:43:02,543 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 199 flow [2023-01-28 09:43:02,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=199, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-01-28 09:43:02,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2023-01-28 09:43:02,544 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 199 flow [2023-01-28 09:43:02,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:02,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:02,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:02,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:43:02,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:02,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:02,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1758554723, now seen corresponding path program 2 times [2023-01-28 09:43:02,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462112322] [2023-01-28 09:43:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:03,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:03,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462112322] [2023-01-28 09:43:03,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462112322] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:03,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:03,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:43:03,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635348348] [2023-01-28 09:43:03,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:03,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:43:03,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:43:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:43:03,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 331 [2023-01-28 09:43:03,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:03,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:03,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 331 [2023-01-28 09:43:03,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:03,445 INFO L130 PetriNetUnfolder]: 1073/1714 cut-off events. [2023-01-28 09:43:03,445 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-01-28 09:43:03,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1714 events. 1073/1714 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8071 event pairs, 132 based on Foata normal form. 4/1584 useless extension candidates. Maximal degree in co-relation 6457. Up to 602 conditions per place. [2023-01-28 09:43:03,453 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 46 selfloop transitions, 5 changer transitions 41/92 dead transitions. [2023-01-28 09:43:03,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 633 flow [2023-01-28 09:43:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:43:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:43:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 866 transitions. [2023-01-28 09:43:03,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3737591713422529 [2023-01-28 09:43:03,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 866 transitions. [2023-01-28 09:43:03,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 866 transitions. [2023-01-28 09:43:03,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:03,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 866 transitions. [2023-01-28 09:43:03,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:03,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:03,460 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:03,460 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 199 flow. Second operand 7 states and 866 transitions. [2023-01-28 09:43:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 633 flow [2023-01-28 09:43:03,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 589 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-28 09:43:03,480 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 173 flow [2023-01-28 09:43:03,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-01-28 09:43:03,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-01-28 09:43:03,481 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 173 flow [2023-01-28 09:43:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:03,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:03,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:03,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:43:03,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:03,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash -115692411, now seen corresponding path program 3 times [2023-01-28 09:43:03,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:03,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793316485] [2023-01-28 09:43:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:03,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793316485] [2023-01-28 09:43:03,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793316485] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717122710] [2023-01-28 09:43:03,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:43:03,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:03,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:03,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:03,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:43:03,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 09:43:03,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:03,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 09:43:03,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:04,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 09:43:04,078 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 [2023-01-28 09:43:04,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 09:43:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:04,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:04,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-01-28 09:43:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717122710] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:10,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 26 [2023-01-28 09:43:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337205444] [2023-01-28 09:43:10,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 09:43:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 09:43:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=601, Unknown=6, NotChecked=0, Total=756 [2023-01-28 09:43:10,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 331 [2023-01-28 09:43:10,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 173 flow. Second operand has 28 states, 28 states have (on average 112.57142857142857) internal successors, (3152), 28 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:10,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:10,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 331 [2023-01-28 09:43:10,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:11,888 INFO L130 PetriNetUnfolder]: 1727/2822 cut-off events. [2023-01-28 09:43:11,888 INFO L131 PetriNetUnfolder]: For 6136/6136 co-relation queries the response was YES. [2023-01-28 09:43:11,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9837 conditions, 2822 events. 1727/2822 cut-off events. For 6136/6136 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15210 event pairs, 111 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 9806. Up to 775 conditions per place. [2023-01-28 09:43:11,900 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 103 selfloop transitions, 26 changer transitions 157/286 dead transitions. [2023-01-28 09:43:11,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 286 transitions, 1863 flow [2023-01-28 09:43:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 09:43:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 09:43:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3464 transitions. [2023-01-28 09:43:11,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36087092405458904 [2023-01-28 09:43:11,908 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3464 transitions. [2023-01-28 09:43:11,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3464 transitions. [2023-01-28 09:43:11,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:11,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3464 transitions. [2023-01-28 09:43:11,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 119.44827586206897) internal successors, (3464), 29 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:11,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 331.0) internal successors, (9930), 30 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:11,926 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 331.0) internal successors, (9930), 30 states have internal predecessors, (9930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:11,927 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 173 flow. Second operand 29 states and 3464 transitions. [2023-01-28 09:43:11,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 286 transitions, 1863 flow [2023-01-28 09:43:11,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 286 transitions, 1748 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-01-28 09:43:11,935 INFO L231 Difference]: Finished difference. Result has 93 places, 49 transitions, 401 flow [2023-01-28 09:43:11,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=401, PETRI_PLACES=93, PETRI_TRANSITIONS=49} [2023-01-28 09:43:11,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2023-01-28 09:43:11,937 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 49 transitions, 401 flow [2023-01-28 09:43:11,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 112.57142857142857) internal successors, (3152), 28 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:11,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:11,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:11,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:12,143 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,SelfDestructingSolverStorable5 [2023-01-28 09:43:12,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:43:12,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash 157009709, now seen corresponding path program 4 times [2023-01-28 09:43:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:12,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143686850] [2023-01-28 09:43:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:43:12,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143686850] [2023-01-28 09:43:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143686850] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716036379] [2023-01-28 09:43:12,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:43:12,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:12,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:12,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:43:12,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:43:12,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:12,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 09:43:12,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:12,585 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 09:43:12,585 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 96 treesize of output 90 [2023-01-28 09:43:12,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 09:43:12,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2023-01-28 09:43:12,677 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 [2023-01-28 09:43:12,698 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 [2023-01-28 09:43:12,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-28 09:43:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:12,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:14,933 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (<= c_~min~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base) c_~A~0.offset))) is different from false [2023-01-28 09:43:14,945 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_223 (Array Int Int)) (v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (< (select (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1))) is different from false [2023-01-28 09:43:14,951 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:43:14,951 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 41 [2023-01-28 09:43:14,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 423 treesize of output 417 [2023-01-28 09:43:14,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 232 [2023-01-28 09:43:14,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 224 [2023-01-28 09:43:14,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2023-01-28 09:43:14,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 204 [2023-01-28 09:43:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-28 09:43:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716036379] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:15,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2023-01-28 09:43:15,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216182801] [2023-01-28 09:43:15,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:15,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 09:43:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 09:43:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=369, Unknown=12, NotChecked=82, Total=552 [2023-01-28 09:43:15,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 331 [2023-01-28 09:43:15,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 49 transitions, 401 flow. Second operand has 24 states, 24 states have (on average 106.95833333333333) internal successors, (2567), 24 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:15,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:15,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 331 [2023-01-28 09:43:15,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:17,986 INFO L130 PetriNetUnfolder]: 1469/2486 cut-off events. [2023-01-28 09:43:17,987 INFO L131 PetriNetUnfolder]: For 30865/30865 co-relation queries the response was YES. [2023-01-28 09:43:17,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14203 conditions, 2486 events. 1469/2486 cut-off events. For 30865/30865 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13193 event pairs, 152 based on Foata normal form. 14/2500 useless extension candidates. Maximal degree in co-relation 14167. Up to 771 conditions per place. [2023-01-28 09:43:17,999 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 0 selfloop transitions, 0 changer transitions 176/176 dead transitions. [2023-01-28 09:43:17,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 176 transitions, 1841 flow [2023-01-28 09:43:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:43:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:43:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1783 transitions. [2023-01-28 09:43:18,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666918429003023 [2023-01-28 09:43:18,004 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1783 transitions. [2023-01-28 09:43:18,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1783 transitions. [2023-01-28 09:43:18,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:18,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1783 transitions. [2023-01-28 09:43:18,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 111.4375) internal successors, (1783), 16 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:18,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:18,016 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:18,016 INFO L175 Difference]: Start difference. First operand has 93 places, 49 transitions, 401 flow. Second operand 16 states and 1783 transitions. [2023-01-28 09:43:18,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 176 transitions, 1841 flow [2023-01-28 09:43:18,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 176 transitions, 1508 flow, removed 134 selfloop flow, removed 16 redundant places. [2023-01-28 09:43:18,052 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-01-28 09:43:18,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-01-28 09:43:18,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2023-01-28 09:43:18,052 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-01-28 09:43:18,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.95833333333333) internal successors, (2567), 24 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:18,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:43:18,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:43:18,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:43:18,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:43:18,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 09:43:18,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:18,260 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-01-28 09:43:18,263 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:43:18,263 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:43:18,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:43:18 BasicIcfg [2023-01-28 09:43:18,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:43:18,265 INFO L158 Benchmark]: Toolchain (without parser) took 23788.27ms. Allocated memory was 346.0MB in the beginning and 499.1MB in the end (delta: 153.1MB). Free memory was 316.0MB in the beginning and 238.2MB in the end (delta: 77.8MB). Peak memory consumption was 233.2MB. Max. memory is 16.0GB. [2023-01-28 09:43:18,265 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:43:18,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.73ms. Allocated memory is still 346.0MB. Free memory was 315.5MB in the beginning and 303.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:43:18,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.31ms. Allocated memory is still 346.0MB. Free memory was 303.7MB in the beginning and 302.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:18,265 INFO L158 Benchmark]: Boogie Preprocessor took 18.60ms. Allocated memory is still 346.0MB. Free memory was 302.0MB in the beginning and 300.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:18,265 INFO L158 Benchmark]: RCFGBuilder took 462.44ms. Allocated memory is still 346.0MB. Free memory was 300.0MB in the beginning and 277.8MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:18,266 INFO L158 Benchmark]: TraceAbstraction took 23126.67ms. Allocated memory was 346.0MB in the beginning and 499.1MB in the end (delta: 153.1MB). Free memory was 277.3MB in the beginning and 238.2MB in the end (delta: 39.1MB). Peak memory consumption was 193.4MB. Max. memory is 16.0GB. [2023-01-28 09:43:18,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 154.73ms. Allocated memory is still 346.0MB. Free memory was 315.5MB in the beginning and 303.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 21.31ms. Allocated memory is still 346.0MB. Free memory was 303.7MB in the beginning and 302.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.60ms. Allocated memory is still 346.0MB. Free memory was 302.0MB in the beginning and 300.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 462.44ms. Allocated memory is still 346.0MB. Free memory was 300.0MB in the beginning and 277.8MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 23126.67ms. Allocated memory was 346.0MB in the beginning and 499.1MB in the end (delta: 153.1MB). Free memory was 277.3MB in the beginning and 238.2MB in the end (delta: 39.1MB). Peak memory consumption was 193.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 154 PlacesBefore, 31 PlacesAfterwards, 156 TransitionsBefore, 24 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 7 FixpointIterations, 94 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 162 TotalNumberOfCompositions, 1738 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1289, independent: 1233, independent conditional: 0, independent unconditional: 1233, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 600, independent: 582, independent conditional: 0, independent unconditional: 582, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1289, independent: 651, independent conditional: 0, independent unconditional: 651, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 600, unknown conditional: 0, unknown unconditional: 600] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 187 locations, 4 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: 23.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1006 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1006 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 230 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2107 IncrementalHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 0 mSDtfsCounter, 2107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=401occurred in iteration=6, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 293 ConstructedInterpolants, 18 QuantifiedInterpolants, 2442 SizeOfPredicates, 46 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 18/33 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! [2023-01-28 09:43:18,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...