/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:08:42,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:08:42,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:08:42,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:08:42,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:08:42,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:08:42,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:08:42,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:08:42,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:08:42,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:08:42,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:08:42,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:08:42,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:08:42,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:08:42,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:08:42,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:08:42,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:08:42,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:08:42,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:08:42,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:08:42,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:08:42,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:08:42,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:08:42,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:08:42,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 05:08:42,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:08:42,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:08:42,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:08:42,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:08:42,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:08:42,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:08:42,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:08:42,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:08:42,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:08:42,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:08:42,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:08:42,672 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 05:08:42,697 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:08:42,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:08:42,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:08:42,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:08:42,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:08:42,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:08:42,700 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:08:42,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:08:42,700 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:08:42,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:08:42,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:08:42,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:08:42,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:08:42,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:08:42,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:08:42,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:08:42,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:08:42,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:08:42,703 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:08:42,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:08:42,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:08:42,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:08:42,960 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:08:42,960 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:08:42,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-01-28 05:08:44,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:08:44,301 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:08:44,301 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-01-28 05:08:44,310 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfd98799/3a201a5c57174ff58add32969152a3f5/FLAGcca74b9d3 [2023-01-28 05:08:44,322 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfd98799/3a201a5c57174ff58add32969152a3f5 [2023-01-28 05:08:44,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:08:44,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:08:44,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:08:44,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:08:44,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:08:44,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a88d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44, skipping insertion in model container [2023-01-28 05:08:44,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:08:44,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:08:44,504 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-01-28 05:08:44,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:08:44,522 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:08:44,550 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-01-28 05:08:44,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:08:44,567 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:08:44,567 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:08:44,572 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:08:44,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44 WrapperNode [2023-01-28 05:08:44,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:08:44,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:08:44,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:08:44,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:08:44,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,627 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 406 [2023-01-28 05:08:44,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:08:44,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:08:44,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:08:44,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:08:44,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:08:44,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:08:44,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:08:44,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:08:44,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (1/1) ... [2023-01-28 05:08:44,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:08:44,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:08:44,714 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 05:08:44,717 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 05:08:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:08:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 05:08:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:08:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:08:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:08:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 05:08:44,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:08:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:08:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:08:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 05:08:44,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:08:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:08:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:08:44,757 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 05:08:44,862 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:08:44,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:08:45,526 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:08:45,696 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:08:45,697 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-01-28 05:08:45,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:08:45 BoogieIcfgContainer [2023-01-28 05:08:45,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:08:45,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:08:45,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:08:45,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:08:45,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:08:44" (1/3) ... [2023-01-28 05:08:45,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c47463a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:08:45, skipping insertion in model container [2023-01-28 05:08:45,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:08:44" (2/3) ... [2023-01-28 05:08:45,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c47463a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:08:45, skipping insertion in model container [2023-01-28 05:08:45,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:08:45" (3/3) ... [2023-01-28 05:08:45,708 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-01-28 05:08:45,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:08:45,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:08:45,723 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:08:45,844 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 05:08:45,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 387 transitions, 798 flow [2023-01-28 05:08:46,014 INFO L130 PetriNetUnfolder]: 37/384 cut-off events. [2023-01-28 05:08:46,014 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:08:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 384 events. 37/384 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 413 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 305. Up to 2 conditions per place. [2023-01-28 05:08:46,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 387 transitions, 798 flow [2023-01-28 05:08:46,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 374 transitions, 766 flow [2023-01-28 05:08:46,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:08:46,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 374 transitions, 766 flow [2023-01-28 05:08:46,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 374 transitions, 766 flow [2023-01-28 05:08:46,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 374 transitions, 766 flow [2023-01-28 05:08:46,120 INFO L130 PetriNetUnfolder]: 37/374 cut-off events. [2023-01-28 05:08:46,120 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:08:46,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 374 events. 37/374 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 388 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 305. Up to 2 conditions per place. [2023-01-28 05:08:46,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 4578 [2023-01-28 05:08:58,083 INFO L134 LiptonReduction]: Checked pairs total: 5390 [2023-01-28 05:08:58,084 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-01-28 05:08:58,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:08:58,114 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;@7a45e1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:08:58,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 05:08:58,121 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-01-28 05:08:58,122 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:08:58,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:08:58,123 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 05:08:58,124 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 05:08:58,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:08:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash 450077520, now seen corresponding path program 1 times [2023-01-28 05:08:58,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:08:58,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203693938] [2023-01-28 05:08:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:08:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:08:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:08:58,586 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 05:08:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:08:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203693938] [2023-01-28 05:08:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203693938] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:08:58,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:08:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:08:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577350179] [2023-01-28 05:08:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:08:58,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:08:58,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:08:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:08:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:08:58,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 816 [2023-01-28 05:08:58,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 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 05:08:58,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:08:58,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 816 [2023-01-28 05:08:58,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:08:58,741 INFO L130 PetriNetUnfolder]: 251/392 cut-off events. [2023-01-28 05:08:58,741 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-28 05:08:58,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 392 events. 251/392 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1419 event pairs, 67 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 656. Up to 227 conditions per place. [2023-01-28 05:08:58,745 INFO L137 encePairwiseOnDemand]: 813/816 looper letters, 43 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-01-28 05:08:58,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 208 flow [2023-01-28 05:08:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:08:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:08:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1084 transitions. [2023-01-28 05:08:58,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281045751633985 [2023-01-28 05:08:58,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1084 transitions. [2023-01-28 05:08:58,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1084 transitions. [2023-01-28 05:08:58,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:08:58,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1084 transitions. [2023-01-28 05:08:58,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.3333333333333) internal successors, (1084), 3 states have internal predecessors, (1084), 0 states have call successors, (0), 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 05:08:58,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 05:08:58,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 05:08:58,780 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 88 flow. Second operand 3 states and 1084 transitions. [2023-01-28 05:08:58,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 208 flow [2023-01-28 05:08:58,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 05:08:58,785 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 88 flow [2023-01-28 05:08:58,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2023-01-28 05:08:58,790 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-01-28 05:08:58,790 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 88 flow [2023-01-28 05:08:58,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 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 05:08:58,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:08:58,792 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 05:08:58,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:08:58,792 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 05:08:58,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:08:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1896403345, now seen corresponding path program 1 times [2023-01-28 05:08:58,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:08:58,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163367425] [2023-01-28 05:08:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:08:58,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:08:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:08:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:08:58,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:08:58,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163367425] [2023-01-28 05:08:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163367425] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:08:58,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:08:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:08:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16580946] [2023-01-28 05:08:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:08:58,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:08:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:08:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:08:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:08:58,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 816 [2023-01-28 05:08:58,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 307.5) internal successors, (1230), 4 states have internal predecessors, (1230), 0 states have call successors, (0), 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 05:08:58,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:08:58,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 816 [2023-01-28 05:08:58,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:08:59,160 INFO L130 PetriNetUnfolder]: 322/552 cut-off events. [2023-01-28 05:08:59,160 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-01-28 05:08:59,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 552 events. 322/552 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2355 event pairs, 241 based on Foata normal form. 40/459 useless extension candidates. Maximal degree in co-relation 669. Up to 385 conditions per place. [2023-01-28 05:08:59,164 INFO L137 encePairwiseOnDemand]: 806/816 looper letters, 33 selfloop transitions, 2 changer transitions 47/84 dead transitions. [2023-01-28 05:08:59,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 84 transitions, 358 flow [2023-01-28 05:08:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:08:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:08:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1595 transitions. [2023-01-28 05:08:59,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909313725490196 [2023-01-28 05:08:59,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1595 transitions. [2023-01-28 05:08:59,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1595 transitions. [2023-01-28 05:08:59,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:08:59,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1595 transitions. [2023-01-28 05:08:59,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 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 05:08:59,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:08:59,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:08:59,184 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 88 flow. Second operand 5 states and 1595 transitions. [2023-01-28 05:08:59,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 84 transitions, 358 flow [2023-01-28 05:08:59,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 84 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:08:59,186 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 116 flow [2023-01-28 05:08:59,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-01-28 05:08:59,187 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-01-28 05:08:59,187 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 116 flow [2023-01-28 05:08:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.5) internal successors, (1230), 4 states have internal predecessors, (1230), 0 states have call successors, (0), 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 05:08:59,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:08:59,188 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 05:08:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:08:59,189 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 05:08:59,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:08:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1172777929, now seen corresponding path program 1 times [2023-01-28 05:08:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:08:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682296954] [2023-01-28 05:08:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:08:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:08:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:08:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:08:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:08:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682296954] [2023-01-28 05:08:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682296954] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:08:59,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:08:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:08:59,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049290564] [2023-01-28 05:08:59,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:08:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:08:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:08:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:08:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:08:59,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 816 [2023-01-28 05:08:59,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 342.75) internal successors, (1371), 4 states have internal predecessors, (1371), 0 states have call successors, (0), 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 05:08:59,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:08:59,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 816 [2023-01-28 05:08:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:08:59,498 INFO L130 PetriNetUnfolder]: 303/498 cut-off events. [2023-01-28 05:08:59,499 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2023-01-28 05:08:59,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 498 events. 303/498 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1844 event pairs, 224 based on Foata normal form. 22/448 useless extension candidates. Maximal degree in co-relation 1251. Up to 386 conditions per place. [2023-01-28 05:08:59,502 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 36 selfloop transitions, 2 changer transitions 16/56 dead transitions. [2023-01-28 05:08:59,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 275 flow [2023-01-28 05:08:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:08:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:08:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1402 transitions. [2023-01-28 05:08:59,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42953431372549017 [2023-01-28 05:08:59,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1402 transitions. [2023-01-28 05:08:59,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1402 transitions. [2023-01-28 05:08:59,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:08:59,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1402 transitions. [2023-01-28 05:08:59,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 350.5) internal successors, (1402), 4 states have internal predecessors, (1402), 0 states have call successors, (0), 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 05:08:59,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 0 states have call successors, (0), 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 05:08:59,517 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 816.0) internal successors, (4080), 5 states have internal predecessors, (4080), 0 states have call successors, (0), 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 05:08:59,518 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 116 flow. Second operand 4 states and 1402 transitions. [2023-01-28 05:08:59,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 275 flow [2023-01-28 05:08:59,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 56 transitions, 257 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 05:08:59,520 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 118 flow [2023-01-28 05:08:59,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-01-28 05:08:59,522 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-01-28 05:08:59,524 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 118 flow [2023-01-28 05:08:59,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 342.75) internal successors, (1371), 4 states have internal predecessors, (1371), 0 states have call successors, (0), 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 05:08:59,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:08:59,525 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, 1, 1] [2023-01-28 05:08:59,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:08:59,526 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 05:08:59,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:08:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1852307064, now seen corresponding path program 1 times [2023-01-28 05:08:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:08:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313218582] [2023-01-28 05:08:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:08:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:08:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:08:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:08:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:08:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313218582] [2023-01-28 05:08:59,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313218582] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:08:59,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:08:59,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:08:59,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523526728] [2023-01-28 05:08:59,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:08:59,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:08:59,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:08:59,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:08:59,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:08:59,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 816 [2023-01-28 05:08:59,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 0 states have call successors, (0), 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 05:08:59,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:08:59,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 816 [2023-01-28 05:08:59,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:08:59,864 INFO L130 PetriNetUnfolder]: 358/610 cut-off events. [2023-01-28 05:08:59,864 INFO L131 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2023-01-28 05:08:59,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 610 events. 358/610 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2605 event pairs, 265 based on Foata normal form. 80/655 useless extension candidates. Maximal degree in co-relation 1573. Up to 389 conditions per place. [2023-01-28 05:08:59,867 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 35 selfloop transitions, 2 changer transitions 40/79 dead transitions. [2023-01-28 05:08:59,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 385 flow [2023-01-28 05:08:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:08:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:08:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2023-01-28 05:08:59,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3889705882352941 [2023-01-28 05:08:59,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2023-01-28 05:08:59,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2023-01-28 05:08:59,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:08:59,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2023-01-28 05:08:59,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 0 states have call successors, (0), 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 05:08:59,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:08:59,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:08:59,884 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 118 flow. Second operand 5 states and 1587 transitions. [2023-01-28 05:08:59,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 385 flow [2023-01-28 05:08:59,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 79 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 05:08:59,887 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 136 flow [2023-01-28 05:08:59,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-28 05:08:59,888 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-01-28 05:08:59,888 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 136 flow [2023-01-28 05:08:59,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 0 states have call successors, (0), 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 05:08:59,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:08:59,889 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, 1, 1, 1] [2023-01-28 05:08:59,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:08:59,889 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 05:08:59,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:08:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash 896860092, now seen corresponding path program 1 times [2023-01-28 05:08:59,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:08:59,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657911312] [2023-01-28 05:08:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:08:59,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:08:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:09:00,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:00,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657911312] [2023-01-28 05:09:00,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657911312] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:09:00,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:09:00,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:09:00,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622938180] [2023-01-28 05:09:00,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:09:00,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:09:00,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:09:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:09:00,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 816 [2023-01-28 05:09:00,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 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 05:09:00,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:00,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 816 [2023-01-28 05:09:00,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:00,190 INFO L130 PetriNetUnfolder]: 608/890 cut-off events. [2023-01-28 05:09:00,190 INFO L131 PetriNetUnfolder]: For 1285/1285 co-relation queries the response was YES. [2023-01-28 05:09:00,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 890 events. 608/890 cut-off events. For 1285/1285 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2959 event pairs, 153 based on Foata normal form. 34/855 useless extension candidates. Maximal degree in co-relation 2540. Up to 569 conditions per place. [2023-01-28 05:09:00,196 INFO L137 encePairwiseOnDemand]: 813/816 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-01-28 05:09:00,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 298 flow [2023-01-28 05:09:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:09:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:09:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1085 transitions. [2023-01-28 05:09:00,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443218954248366 [2023-01-28 05:09:00,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1085 transitions. [2023-01-28 05:09:00,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1085 transitions. [2023-01-28 05:09:00,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:00,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1085 transitions. [2023-01-28 05:09:00,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 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 05:09:00,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 05:09:00,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 05:09:00,207 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 136 flow. Second operand 3 states and 1085 transitions. [2023-01-28 05:09:00,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 298 flow [2023-01-28 05:09:00,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 276 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-01-28 05:09:00,210 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 134 flow [2023-01-28 05:09:00,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-01-28 05:09:00,211 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-01-28 05:09:00,211 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 134 flow [2023-01-28 05:09:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 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 05:09:00,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:00,212 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, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:00,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:09:00,212 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 05:09:00,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1135704464, now seen corresponding path program 1 times [2023-01-28 05:09:00,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:00,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770209207] [2023-01-28 05:09:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:00,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:09:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770209207] [2023-01-28 05:09:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770209207] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:09:00,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:09:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:09:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476611112] [2023-01-28 05:09:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:09:00,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:09:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:09:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:09:00,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 816 [2023-01-28 05:09:00,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 0 states have call successors, (0), 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 05:09:00,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:00,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 816 [2023-01-28 05:09:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:00,547 INFO L130 PetriNetUnfolder]: 422/672 cut-off events. [2023-01-28 05:09:00,547 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-01-28 05:09:00,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 672 events. 422/672 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2690 event pairs, 329 based on Foata normal form. 26/638 useless extension candidates. Maximal degree in co-relation 1872. Up to 622 conditions per place. [2023-01-28 05:09:00,552 INFO L137 encePairwiseOnDemand]: 809/816 looper letters, 37 selfloop transitions, 2 changer transitions 20/61 dead transitions. [2023-01-28 05:09:00,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 325 flow [2023-01-28 05:09:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:09:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:09:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2023-01-28 05:09:00,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3845588235294118 [2023-01-28 05:09:00,556 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2023-01-28 05:09:00,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2023-01-28 05:09:00,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:00,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2023-01-28 05:09:00,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 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 05:09:00,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:00,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:00,566 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 134 flow. Second operand 5 states and 1569 transitions. [2023-01-28 05:09:00,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 325 flow [2023-01-28 05:09:00,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:09:00,568 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 152 flow [2023-01-28 05:09:00,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-01-28 05:09:00,569 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-01-28 05:09:00,569 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 152 flow [2023-01-28 05:09:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 0 states have call successors, (0), 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 05:09:00,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:00,570 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:09:00,570 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 05:09:00,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -797598496, now seen corresponding path program 1 times [2023-01-28 05:09:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304907055] [2023-01-28 05:09:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 05:09:00,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:00,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304907055] [2023-01-28 05:09:00,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304907055] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:09:00,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:09:00,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:09:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343742808] [2023-01-28 05:09:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:09:00,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:09:00,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:09:00,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:09:00,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 816 [2023-01-28 05:09:00,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 349.75) internal successors, (1399), 4 states have internal predecessors, (1399), 0 states have call successors, (0), 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 05:09:00,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:00,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 816 [2023-01-28 05:09:00,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:01,105 INFO L130 PetriNetUnfolder]: 1202/1737 cut-off events. [2023-01-28 05:09:01,105 INFO L131 PetriNetUnfolder]: For 1358/1358 co-relation queries the response was YES. [2023-01-28 05:09:01,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1737 events. 1202/1737 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6943 event pairs, 196 based on Foata normal form. 62/1667 useless extension candidates. Maximal degree in co-relation 4927. Up to 820 conditions per place. [2023-01-28 05:09:01,115 INFO L137 encePairwiseOnDemand]: 809/816 looper letters, 72 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-01-28 05:09:01,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 479 flow [2023-01-28 05:09:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:09:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:09:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1784 transitions. [2023-01-28 05:09:01,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372549019607843 [2023-01-28 05:09:01,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1784 transitions. [2023-01-28 05:09:01,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1784 transitions. [2023-01-28 05:09:01,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:01,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1784 transitions. [2023-01-28 05:09:01,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 356.8) internal successors, (1784), 5 states have internal predecessors, (1784), 0 states have call successors, (0), 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 05:09:01,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:01,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:01,131 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 152 flow. Second operand 5 states and 1784 transitions. [2023-01-28 05:09:01,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 479 flow [2023-01-28 05:09:01,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 471 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 05:09:01,135 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 264 flow [2023-01-28 05:09:01,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-01-28 05:09:01,136 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-01-28 05:09:01,136 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 264 flow [2023-01-28 05:09:01,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 349.75) internal successors, (1399), 4 states have internal predecessors, (1399), 0 states have call successors, (0), 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 05:09:01,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:01,137 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:01,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:09:01,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 05:09:01,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 816445328, now seen corresponding path program 2 times [2023-01-28 05:09:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521807295] [2023-01-28 05:09:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:01,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 05:09:01,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521807295] [2023-01-28 05:09:01,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521807295] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:09:01,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252091596] [2023-01-28 05:09:01,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:09:01,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:09:01,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:09:01,454 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 05:09:01,457 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 05:09:01,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:09:01,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:09:01,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 05:09:01,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:09:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 05:09:01,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:09:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252091596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:09:01,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:09:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-01-28 05:09:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951435789] [2023-01-28 05:09:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:09:01,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:09:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:09:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 05:09:01,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 816 [2023-01-28 05:09:01,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 351.2) internal successors, (1756), 5 states have internal predecessors, (1756), 0 states have call successors, (0), 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 05:09:01,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:01,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 816 [2023-01-28 05:09:01,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:02,236 INFO L130 PetriNetUnfolder]: 2012/2903 cut-off events. [2023-01-28 05:09:02,236 INFO L131 PetriNetUnfolder]: For 5608/5608 co-relation queries the response was YES. [2023-01-28 05:09:02,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2903 events. 2012/2903 cut-off events. For 5608/5608 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12744 event pairs, 283 based on Foata normal form. 38/2715 useless extension candidates. Maximal degree in co-relation 10781. Up to 1039 conditions per place. [2023-01-28 05:09:02,255 INFO L137 encePairwiseOnDemand]: 810/816 looper letters, 94 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2023-01-28 05:09:02,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 113 transitions, 811 flow [2023-01-28 05:09:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:09:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:09:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2152 transitions. [2023-01-28 05:09:02,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395424836601307 [2023-01-28 05:09:02,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2152 transitions. [2023-01-28 05:09:02,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2152 transitions. [2023-01-28 05:09:02,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:02,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2152 transitions. [2023-01-28 05:09:02,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.6666666666667) internal successors, (2152), 6 states have internal predecessors, (2152), 0 states have call successors, (0), 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 05:09:02,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 0 states have call successors, (0), 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 05:09:02,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 0 states have call successors, (0), 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 05:09:02,284 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 264 flow. Second operand 6 states and 2152 transitions. [2023-01-28 05:09:02,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 113 transitions, 811 flow [2023-01-28 05:09:02,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 811 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:09:02,292 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 491 flow [2023-01-28 05:09:02,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2023-01-28 05:09:02,295 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-01-28 05:09:02,295 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 491 flow [2023-01-28 05:09:02,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 351.2) internal successors, (1756), 5 states have internal predecessors, (1756), 0 states have call successors, (0), 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 05:09:02,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:02,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:02,304 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 05:09:02,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:09:02,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 05:09:02,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -608069975, now seen corresponding path program 1 times [2023-01-28 05:09:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:02,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042561529] [2023-01-28 05:09:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:02,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 05:09:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042561529] [2023-01-28 05:09:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042561529] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:09:02,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:09:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:09:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645460563] [2023-01-28 05:09:02,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:09:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:09:02,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:02,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:09:02,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:09:02,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 816 [2023-01-28 05:09:02,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 0 states have call successors, (0), 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 05:09:02,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:02,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 816 [2023-01-28 05:09:02,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:03,462 INFO L130 PetriNetUnfolder]: 1954/2936 cut-off events. [2023-01-28 05:09:03,463 INFO L131 PetriNetUnfolder]: For 15476/15935 co-relation queries the response was YES. [2023-01-28 05:09:03,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13055 conditions, 2936 events. 1954/2936 cut-off events. For 15476/15935 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14108 event pairs, 1026 based on Foata normal form. 383/3016 useless extension candidates. Maximal degree in co-relation 13019. Up to 2440 conditions per place. [2023-01-28 05:09:03,487 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 55 selfloop transitions, 2 changer transitions 40/108 dead transitions. [2023-01-28 05:09:03,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 108 transitions, 928 flow [2023-01-28 05:09:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:09:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:09:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2023-01-28 05:09:03,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37598039215686274 [2023-01-28 05:09:03,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2023-01-28 05:09:03,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2023-01-28 05:09:03,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:03,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2023-01-28 05:09:03,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 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 05:09:03,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:03,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:03,500 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 491 flow. Second operand 5 states and 1534 transitions. [2023-01-28 05:09:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 108 transitions, 928 flow [2023-01-28 05:09:03,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 108 transitions, 901 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 05:09:03,511 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 496 flow [2023-01-28 05:09:03,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-01-28 05:09:03,512 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-01-28 05:09:03,513 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 496 flow [2023-01-28 05:09:03,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 0 states have call successors, (0), 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 05:09:03,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:03,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:03,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 05:09:03,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 05:09:03,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash 912604163, now seen corresponding path program 1 times [2023-01-28 05:09:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:03,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919541428] [2023-01-28 05:09:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:09:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919541428] [2023-01-28 05:09:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919541428] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:09:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554200484] [2023-01-28 05:09:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:09:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:09:03,705 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 05:09:03,732 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 05:09:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:03,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:09:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:09:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:09:03,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:09:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:09:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554200484] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:09:03,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:09:03,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2023-01-28 05:09:03,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222038801] [2023-01-28 05:09:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:09:03,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:09:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:09:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:09:03,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 816 [2023-01-28 05:09:03,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 296.4) internal successors, (1482), 5 states have internal predecessors, (1482), 0 states have call successors, (0), 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 05:09:03,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:03,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 816 [2023-01-28 05:09:03,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:04,395 INFO L130 PetriNetUnfolder]: 1719/2553 cut-off events. [2023-01-28 05:09:04,395 INFO L131 PetriNetUnfolder]: For 12555/12938 co-relation queries the response was YES. [2023-01-28 05:09:04,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 2553 events. 1719/2553 cut-off events. For 12555/12938 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12145 event pairs, 985 based on Foata normal form. 242/2527 useless extension candidates. Maximal degree in co-relation 11254. Up to 2389 conditions per place. [2023-01-28 05:09:04,417 INFO L137 encePairwiseOnDemand]: 811/816 looper letters, 54 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-01-28 05:09:04,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 614 flow [2023-01-28 05:09:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:09:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:09:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2023-01-28 05:09:04,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642156862745098 [2023-01-28 05:09:04,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2023-01-28 05:09:04,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2023-01-28 05:09:04,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:04,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2023-01-28 05:09:04,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 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 05:09:04,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:04,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 816.0) internal successors, (4896), 6 states have internal predecessors, (4896), 0 states have call successors, (0), 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 05:09:04,430 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 496 flow. Second operand 5 states and 1486 transitions. [2023-01-28 05:09:04,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 614 flow [2023-01-28 05:09:04,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 594 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 05:09:04,443 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 492 flow [2023-01-28 05:09:04,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-01-28 05:09:04,444 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-01-28 05:09:04,444 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 492 flow [2023-01-28 05:09:04,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 296.4) internal successors, (1482), 5 states have internal predecessors, (1482), 0 states have call successors, (0), 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 05:09:04,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:04,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:04,455 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 05:09:04,651 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,SelfDestructingSolverStorable9 [2023-01-28 05:09:04,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 05:09:04,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:04,652 INFO L85 PathProgramCache]: Analyzing trace with hash 874019100, now seen corresponding path program 1 times [2023-01-28 05:09:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775569108] [2023-01-28 05:09:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:04,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:09:04,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:04,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775569108] [2023-01-28 05:09:04,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775569108] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:09:04,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075305217] [2023-01-28 05:09:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:04,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:09:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:09:04,889 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 05:09:04,920 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 05:09:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:09:05,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:09:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:09:05,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:09:05,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:09:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075305217] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:09:05,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:09:05,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 9 [2023-01-28 05:09:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221004014] [2023-01-28 05:09:05,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:09:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 05:09:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:09:05,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 05:09:05,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:09:05,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 816 [2023-01-28 05:09:05,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 492 flow. Second operand has 9 states, 9 states have (on average 348.55555555555554) internal successors, (3137), 9 states have internal predecessors, (3137), 0 states have call successors, (0), 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 05:09:05,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:09:05,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 816 [2023-01-28 05:09:05,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:09:05,827 INFO L130 PetriNetUnfolder]: 1941/2822 cut-off events. [2023-01-28 05:09:05,828 INFO L131 PetriNetUnfolder]: For 9364/9364 co-relation queries the response was YES. [2023-01-28 05:09:05,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 2822 events. 1941/2822 cut-off events. For 9364/9364 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12066 event pairs, 70 based on Foata normal form. 116/2716 useless extension candidates. Maximal degree in co-relation 12110. Up to 1326 conditions per place. [2023-01-28 05:09:05,850 INFO L137 encePairwiseOnDemand]: 809/816 looper letters, 101 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2023-01-28 05:09:05,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 132 transitions, 1103 flow [2023-01-28 05:09:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 05:09:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 05:09:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2489 transitions. [2023-01-28 05:09:05,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43574929971988796 [2023-01-28 05:09:05,856 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2489 transitions. [2023-01-28 05:09:05,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2489 transitions. [2023-01-28 05:09:05,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:09:05,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2489 transitions. [2023-01-28 05:09:05,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.57142857142856) internal successors, (2489), 7 states have internal predecessors, (2489), 0 states have call successors, (0), 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 05:09:05,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 816.0) internal successors, (6528), 8 states have internal predecessors, (6528), 0 states have call successors, (0), 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 05:09:05,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 816.0) internal successors, (6528), 8 states have internal predecessors, (6528), 0 states have call successors, (0), 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 05:09:05,868 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 492 flow. Second operand 7 states and 2489 transitions. [2023-01-28 05:09:05,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 132 transitions, 1103 flow [2023-01-28 05:09:05,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 132 transitions, 1095 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 05:09:05,882 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 762 flow [2023-01-28 05:09:05,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2023-01-28 05:09:05,883 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-01-28 05:09:05,883 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 762 flow [2023-01-28 05:09:05,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 348.55555555555554) internal successors, (3137), 9 states have internal predecessors, (3137), 0 states have call successors, (0), 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 05:09:05,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:09:05,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:09:05,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:09:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:09:06,091 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 05:09:06,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:09:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash 216142454, now seen corresponding path program 2 times [2023-01-28 05:09:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:09:06,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683672022] [2023-01-28 05:09:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:09:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:09:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:09:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:09:07,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:09:07,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683672022] [2023-01-28 05:09:07,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683672022] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:09:07,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198840117] [2023-01-28 05:09:07,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:09:07,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:09:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:09:07,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:09:07,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:09:07,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:09:07,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:09:07,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 05:09:07,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:09:07,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:07,537 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 05:09:07,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-01-28 05:09:07,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 05:09:07,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:07,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 05:09:07,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 05:09:07,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:07,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:07,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:09:07,839 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 42 treesize of output 38 [2023-01-28 05:09:07,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:09:07,932 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 33 treesize of output 31 [2023-01-28 05:09:07,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:07,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:08,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:08,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:09:08,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:09:08,047 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 24 treesize of output 24 [2023-01-28 05:09:08,348 INFO L321 Elim1Store]: treesize reduction 69, result has 41.0 percent of original size [2023-01-28 05:09:08,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 92 [2023-01-28 05:09:08,359 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 65 treesize of output 53 [2023-01-28 05:09:08,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 05:09:08,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:08,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 61 treesize of output 48 [2023-01-28 05:09:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:09:08,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:09:09,164 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 188 [2023-01-28 05:09:09,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,196 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 2618 treesize of output 2602 [2023-01-28 05:09:09,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1282 treesize of output 1102 [2023-01-28 05:09:09,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,272 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 14850 treesize of output 14610 [2023-01-28 05:09:09,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,334 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 902 treesize of output 886 [2023-01-28 05:09:09,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,360 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 878 treesize of output 862 [2023-01-28 05:09:09,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,388 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 854 treesize of output 814 [2023-01-28 05:09:09,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,417 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 806 treesize of output 766 [2023-01-28 05:09:09,423 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 05:09:09,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,446 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 390 treesize of output 387 [2023-01-28 05:09:09,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:09:09,477 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 378 treesize of output 375 [2023-01-28 05:11:26,696 WARN L222 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 2628 DAG size of output: 2635 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 05:13:32,957 WARN L222 SmtUtils]: Spent 23.77s on a formula simplification. DAG size of input: 4123 DAG size of output: 4130 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 05:14:13,070 WARN L222 SmtUtils]: Spent 31.90s on a formula simplification. DAG size of input: 4101 DAG size of output: 4166 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 05:19:50,544 WARN L222 SmtUtils]: Spent 11.58s on a formula simplification that was a NOOP. DAG size: 10187 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 05:21:22,821 WARN L222 SmtUtils]: Spent 1.23m on a formula simplification. DAG size of input: 7070 DAG size of output: 7073 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 05:21:41,467 WARN L222 SmtUtils]: Spent 9.07s on a formula simplification that was a NOOP. DAG size: 7062 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 05:21:53,604 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:21:53,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 05:21:53,613 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:21:53,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 05:21:53,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:21:53,817 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-8-1 context. [2023-01-28 05:21:53,818 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 05:21:53,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 05:21:53,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 05:21:53,819 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:21:53,823 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:21:53,823 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:21:53,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:21:53 BasicIcfg [2023-01-28 05:21:53,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:21:53,827 INFO L158 Benchmark]: Toolchain (without parser) took 789501.92ms. Allocated memory was 413.1MB in the beginning and 861.9MB in the end (delta: 448.8MB). Free memory was 372.9MB in the beginning and 617.6MB in the end (delta: -244.8MB). Peak memory consumption was 526.2MB. Max. memory is 16.0GB. [2023-01-28 05:21:53,827 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:21:53,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.24ms. Allocated memory is still 413.1MB. Free memory was 372.5MB in the beginning and 359.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 05:21:53,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.70ms. Allocated memory is still 413.1MB. Free memory was 359.5MB in the beginning and 356.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 05:21:53,832 INFO L158 Benchmark]: Boogie Preprocessor took 55.96ms. Allocated memory is still 413.1MB. Free memory was 356.4MB in the beginning and 353.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:21:53,833 INFO L158 Benchmark]: RCFGBuilder took 1012.47ms. Allocated memory is still 413.1MB. Free memory was 353.7MB in the beginning and 364.0MB in the end (delta: -10.4MB). Peak memory consumption was 35.2MB. Max. memory is 16.0GB. [2023-01-28 05:21:53,833 INFO L158 Benchmark]: TraceAbstraction took 788124.16ms. Allocated memory was 413.1MB in the beginning and 861.9MB in the end (delta: 448.8MB). Free memory was 362.7MB in the beginning and 617.6MB in the end (delta: -254.9MB). Peak memory consumption was 514.0MB. Max. memory is 16.0GB. [2023-01-28 05:21:53,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 246.24ms. Allocated memory is still 413.1MB. Free memory was 372.5MB in the beginning and 359.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.70ms. Allocated memory is still 413.1MB. Free memory was 359.5MB in the beginning and 356.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.96ms. Allocated memory is still 413.1MB. Free memory was 356.4MB in the beginning and 353.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1012.47ms. Allocated memory is still 413.1MB. Free memory was 353.7MB in the beginning and 364.0MB in the end (delta: -10.4MB). Peak memory consumption was 35.2MB. Max. memory is 16.0GB. * TraceAbstraction took 788124.16ms. Allocated memory was 413.1MB in the beginning and 861.9MB in the end (delta: 448.8MB). Free memory was 362.7MB in the beginning and 617.6MB in the end (delta: -254.9MB). Peak memory consumption was 514.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.0s, 347 PlacesBefore, 36 PlacesAfterwards, 374 TransitionsBefore, 35 TransitionsAfterwards, 4578 CoEnabledTransitionPairs, 8 FixpointIterations, 239 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 62 TrivialYvCompositions, 30 ConcurrentYvCompositions, 28 ChoiceCompositions, 429 TotalNumberOfCompositions, 5390 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4898, independent: 4841, independent conditional: 0, independent unconditional: 4841, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2627, independent: 2614, independent conditional: 0, independent unconditional: 2614, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4898, independent: 2227, independent conditional: 0, independent unconditional: 2227, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 2627, unknown conditional: 0, unknown unconditional: 2627] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-8-1 context. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-8-1 context. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-8-1 context. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-8-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 423 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: 787.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 418 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 418 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1241 IncrementalHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 1 mSDtfsCounter, 1241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=762occurred in iteration=11, InterpolantAutomatonStates: 53, 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, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 1079 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1571 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 85/91 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown