/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:13:06,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:13:06,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:13:06,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:13:06,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:13:06,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:13:06,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:13:06,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:13:06,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:13:06,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:13:06,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:13:06,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:13:06,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:13:06,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:13:06,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:13:06,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:13:06,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:13:06,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:13:06,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:13:06,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:13:06,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:13:06,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:13:06,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:13:06,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:13:06,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 22:13:06,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 22:13:06,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 22:13:06,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 22:13:06,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 22:13:06,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 22:13:06,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 22:13:06,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 22:13:06,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 22:13:06,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 22:13:06,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 22:13:06,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 22:13:06,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 22:13:06,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 22:13:06,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:13:06,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:13:06,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:13:06,656 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-SemanticLbe.epf [2022-12-12 22:13:06,697 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:13:06,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:13:06,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:13:06,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:13:06,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:13:06,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:13:06,700 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:13:06,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:13:06,700 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:13:06,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:13:06,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:13:06,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:13:06,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:13:06,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:13:06,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:13:06,702 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:13:06,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:13:06,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:13:06,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:13:06,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:13:06,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:13:06,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:13:06,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:13:06,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:13:06,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:13:06,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:13:06,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:13:06,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:13:06,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:13:06,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:13:06,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:13:06,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:13:07,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:13:07,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:13:07,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:13:07,010 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:13:07,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2022-12-12 22:13:08,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:13:08,331 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:13:08,332 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2022-12-12 22:13:08,341 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737194e06/f19f42e66c2444f99d2ef288f46a94a0/FLAG2d597eab9 [2022-12-12 22:13:08,358 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/737194e06/f19f42e66c2444f99d2ef288f46a94a0 [2022-12-12 22:13:08,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:13:08,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:13:08,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:13:08,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:13:08,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:13:08,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439820d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08, skipping insertion in model container [2022-12-12 22:13:08,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:13:08,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:13:08,597 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-12-12 22:13:08,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:13:08,619 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:13:08,655 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-12-12 22:13:08,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:13:08,673 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:13:08,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08 WrapperNode [2022-12-12 22:13:08,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:13:08,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:13:08,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:13:08,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:13:08,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,735 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 275 [2022-12-12 22:13:08,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:13:08,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:13:08,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:13:08,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:13:08,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:13:08,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:13:08,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:13:08,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:13:08,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (1/1) ... [2022-12-12 22:13:08,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:13:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:08,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 22:13:08,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 22:13:08,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:13:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:13:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:13:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 22:13:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 22:13:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 22:13:08,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 22:13:08,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 22:13:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 22:13:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 22:13:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:13:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 22:13:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:13:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:13:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:13:08,859 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:13:08,981 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:13:08,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:13:09,371 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:13:09,381 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:13:09,381 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 22:13:09,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:13:09 BoogieIcfgContainer [2022-12-12 22:13:09,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:13:09,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:13:09,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:13:09,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:13:09,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:13:08" (1/3) ... [2022-12-12 22:13:09,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39784732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:13:09, skipping insertion in model container [2022-12-12 22:13:09,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:13:08" (2/3) ... [2022-12-12 22:13:09,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39784732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:13:09, skipping insertion in model container [2022-12-12 22:13:09,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:13:09" (3/3) ... [2022-12-12 22:13:09,390 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-12-12 22:13:09,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:13:09,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:13:09,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:13:09,513 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 22:13:09,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 318 transitions, 660 flow [2022-12-12 22:13:09,711 INFO L130 PetriNetUnfolder]: 29/315 cut-off events. [2022-12-12 22:13:09,711 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:13:09,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 29/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 482 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 238. Up to 2 conditions per place. [2022-12-12 22:13:09,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 318 transitions, 660 flow [2022-12-12 22:13:09,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 305 transitions, 628 flow [2022-12-12 22:13:09,733 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:13:09,751 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 305 transitions, 628 flow [2022-12-12 22:13:09,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 628 flow [2022-12-12 22:13:09,856 INFO L130 PetriNetUnfolder]: 29/305 cut-off events. [2022-12-12 22:13:09,856 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:13:09,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 305 events. 29/305 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 480 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 238. Up to 2 conditions per place. [2022-12-12 22:13:09,875 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 305 transitions, 628 flow [2022-12-12 22:13:09,876 INFO L226 LiptonReduction]: Number of co-enabled transitions 15390 [2022-12-12 22:13:19,077 INFO L241 LiptonReduction]: Total number of compositions: 275 [2022-12-12 22:13:19,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:13:19,095 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;@4f105923, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:13:19,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 22:13:19,105 INFO L130 PetriNetUnfolder]: 6/29 cut-off events. [2022-12-12 22:13:19,106 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:13:19,106 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:19,106 INFO L214 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] [2022-12-12 22:13:19,107 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)] === [2022-12-12 22:13:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash 215202653, now seen corresponding path program 1 times [2022-12-12 22:13:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:19,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764788674] [2022-12-12 22:13:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:19,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:13:19,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764788674] [2022-12-12 22:13:19,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764788674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:19,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:13:19,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:13:19,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461485943] [2022-12-12 22:13:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:19,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:13:19,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:19,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:13:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:13:19,617 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:19,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:19,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:19,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:19,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:19,838 INFO L130 PetriNetUnfolder]: 658/963 cut-off events. [2022-12-12 22:13:19,839 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-12-12 22:13:19,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 963 events. 658/963 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3407 event pairs, 253 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 1638. Up to 543 conditions per place. [2022-12-12 22:13:19,844 INFO L137 encePairwiseOnDemand]: 27/30 looper letters, 42 selfloop transitions, 2 changer transitions 6/50 dead transitions. [2022-12-12 22:13:19,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 233 flow [2022-12-12 22:13:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:13:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:13:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 22:13:19,854 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2022-12-12 22:13:19,857 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-12-12 22:13:19,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 50 transitions, 233 flow [2022-12-12 22:13:19,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 44 transitions, 200 flow [2022-12-12 22:13:19,862 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 44 transitions, 200 flow [2022-12-12 22:13:19,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:19,862 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:19,862 INFO L214 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] [2022-12-12 22:13:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:13:19,863 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)] === [2022-12-12 22:13:19,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 578254093, now seen corresponding path program 1 times [2022-12-12 22:13:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:19,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634591782] [2022-12-12 22:13:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:13:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:19,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634591782] [2022-12-12 22:13:19,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634591782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:19,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:13:19,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 22:13:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344977824] [2022-12-12 22:13:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:19,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:13:19,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:13:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:13:19,993 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:19,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 44 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:19,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:19,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:19,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:20,109 INFO L130 PetriNetUnfolder]: 526/769 cut-off events. [2022-12-12 22:13:20,109 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-12 22:13:20,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 769 events. 526/769 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2481 event pairs, 253 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 2076. Up to 767 conditions per place. [2022-12-12 22:13:20,114 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2022-12-12 22:13:20,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 306 flow [2022-12-12 22:13:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:13:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:13:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-12-12 22:13:20,116 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-12 22:13:20,116 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-12 22:13:20,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 47 transitions, 306 flow [2022-12-12 22:13:20,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 47 transitions, 306 flow [2022-12-12 22:13:20,120 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 47 transitions, 306 flow [2022-12-12 22:13:20,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:20,121 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:20,121 INFO L214 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] [2022-12-12 22:13:20,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:13:20,121 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)] === [2022-12-12 22:13:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1164073525, now seen corresponding path program 1 times [2022-12-12 22:13:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:20,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481562777] [2022-12-12 22:13:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:13:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481562777] [2022-12-12 22:13:20,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481562777] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275590034] [2022-12-12 22:13:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:20,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:20,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:20,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 22:13:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:20,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-12 22:13:20,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:13:20,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:13:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275590034] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:13:20,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:13:20,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-12 22:13:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190601671] [2022-12-12 22:13:20,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:13:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:13:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:13:20,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:20,569 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:20,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 47 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:20,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:20,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:20,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:20,758 INFO L130 PetriNetUnfolder]: 526/778 cut-off events. [2022-12-12 22:13:20,758 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-12 22:13:20,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3197 conditions, 778 events. 526/778 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2508 event pairs, 253 based on Foata normal form. 0/629 useless extension candidates. Maximal degree in co-relation 2748. Up to 776 conditions per place. [2022-12-12 22:13:20,764 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2022-12-12 22:13:20,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 472 flow [2022-12-12 22:13:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:13:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:13:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2022-12-12 22:13:20,770 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2833333333333333 [2022-12-12 22:13:20,772 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2022-12-12 22:13:20,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 56 transitions, 472 flow [2022-12-12 22:13:20,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 56 transitions, 472 flow [2022-12-12 22:13:20,778 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 56 transitions, 472 flow [2022-12-12 22:13:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:20,779 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:20,779 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:13:20,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:20,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:20,986 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)] === [2022-12-12 22:13:20,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1683950573, now seen corresponding path program 2 times [2022-12-12 22:13:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:20,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438393738] [2022-12-12 22:13:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-12 22:13:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438393738] [2022-12-12 22:13:21,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438393738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:21,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142037576] [2022-12-12 22:13:21,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:13:21,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:21,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:21,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 22:13:21,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:13:21,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:21,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 22:13:21,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-12 22:13:21,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-12 22:13:21,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142037576] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:13:21,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:13:21,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 22:13:21,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74235143] [2022-12-12 22:13:21,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:13:21,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 22:13:21,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 22:13:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-12-12 22:13:21,564 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:21,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 56 transitions, 472 flow. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:21,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:21,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:21,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:21,750 INFO L130 PetriNetUnfolder]: 526/781 cut-off events. [2022-12-12 22:13:21,751 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-12 22:13:21,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 781 events. 526/781 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2467 event pairs, 253 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 3420. Up to 779 conditions per place. [2022-12-12 22:13:21,756 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2022-12-12 22:13:21,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 614 flow [2022-12-12 22:13:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 22:13:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 22:13:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48 transitions. [2022-12-12 22:13:21,759 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.22857142857142856 [2022-12-12 22:13:21,760 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2022-12-12 22:13:21,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 59 transitions, 614 flow [2022-12-12 22:13:21,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 59 transitions, 614 flow [2022-12-12 22:13:21,765 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 59 transitions, 614 flow [2022-12-12 22:13:21,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:21,765 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:21,765 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:13:21,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 22:13:21,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-12 22:13:21,977 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)] === [2022-12-12 22:13:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 94755155, now seen corresponding path program 3 times [2022-12-12 22:13:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:21,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313834614] [2022-12-12 22:13:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 22:13:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:22,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313834614] [2022-12-12 22:13:22,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313834614] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:22,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677975819] [2022-12-12 22:13:22,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 22:13:22,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:22,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:22,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:22,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 22:13:22,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 22:13:22,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:22,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 22:13:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 22:13:22,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:22,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677975819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:22,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:22,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109778354] [2022-12-12 22:13:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:22,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 22:13:22,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 22:13:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:13:22,684 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:22,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 614 flow. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:22,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:22,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:22,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:22,990 INFO L130 PetriNetUnfolder]: 1118/1632 cut-off events. [2022-12-12 22:13:22,990 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-12-12 22:13:22,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 1632 events. 1118/1632 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6392 event pairs, 253 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 8556. Up to 1630 conditions per place. [2022-12-12 22:13:23,002 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 101 selfloop transitions, 10 changer transitions 1/112 dead transitions. [2022-12-12 22:13:23,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 112 transitions, 1392 flow [2022-12-12 22:13:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:13:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:13:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2022-12-12 22:13:23,005 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2022-12-12 22:13:23,007 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2022-12-12 22:13:23,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 112 transitions, 1392 flow [2022-12-12 22:13:23,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 111 transitions, 1377 flow [2022-12-12 22:13:23,024 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 111 transitions, 1377 flow [2022-12-12 22:13:23,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:23,024 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:23,024 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:13:23,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:23,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:23,231 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)] === [2022-12-12 22:13:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 479466637, now seen corresponding path program 4 times [2022-12-12 22:13:23,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:23,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848769133] [2022-12-12 22:13:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 22:13:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:23,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848769133] [2022-12-12 22:13:23,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848769133] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:23,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724292888] [2022-12-12 22:13:23,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 22:13:23,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:23,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:23,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:23,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 22:13:23,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 22:13:23,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:23,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-12 22:13:23,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 22:13:23,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:24,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724292888] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:24,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:13:24,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 13 [2022-12-12 22:13:24,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359684844] [2022-12-12 22:13:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:24,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 22:13:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:24,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 22:13:24,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-12 22:13:24,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:24,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 111 transitions, 1377 flow. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:24,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:24,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:24,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:24,622 INFO L130 PetriNetUnfolder]: 1602/2322 cut-off events. [2022-12-12 22:13:24,622 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-12-12 22:13:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16419 conditions, 2322 events. 1602/2322 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9410 event pairs, 105 based on Foata normal form. 1/1782 useless extension candidates. Maximal degree in co-relation 14082. Up to 2320 conditions per place. [2022-12-12 22:13:24,642 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 158 selfloop transitions, 19 changer transitions 1/178 dead transitions. [2022-12-12 22:13:24,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 178 transitions, 2564 flow [2022-12-12 22:13:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2022-12-12 22:13:24,644 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2022-12-12 22:13:24,644 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2022-12-12 22:13:24,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 178 transitions, 2564 flow [2022-12-12 22:13:24,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 177 transitions, 2547 flow [2022-12-12 22:13:24,689 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 177 transitions, 2547 flow [2022-12-12 22:13:24,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:24,689 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:24,690 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:24,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-12 22:13:24,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:24,898 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)] === [2022-12-12 22:13:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:24,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1302791557, now seen corresponding path program 1 times [2022-12-12 22:13:24,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:24,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813660861] [2022-12-12 22:13:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:24,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:25,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:25,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813660861] [2022-12-12 22:13:25,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813660861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604672329] [2022-12-12 22:13:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:25,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:25,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 22:13:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:25,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 22:13:25,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:25,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:25,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604672329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:25,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:25,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009608606] [2022-12-12 22:13:25,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:25,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:25,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:25,506 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:25,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 177 transitions, 2547 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:25,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:25,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:25,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:25,976 INFO L130 PetriNetUnfolder]: 1630/2381 cut-off events. [2022-12-12 22:13:25,977 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-12-12 22:13:25,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19217 conditions, 2381 events. 1630/2381 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9984 event pairs, 73 based on Foata normal form. 0/1836 useless extension candidates. Maximal degree in co-relation 16464. Up to 2379 conditions per place. [2022-12-12 22:13:25,994 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 197 selfloop transitions, 18 changer transitions 24/239 dead transitions. [2022-12-12 22:13:25,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 239 transitions, 3914 flow [2022-12-12 22:13:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2022-12-12 22:13:25,996 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.48 [2022-12-12 22:13:25,996 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 26 predicate places. [2022-12-12 22:13:25,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 239 transitions, 3914 flow [2022-12-12 22:13:26,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 215 transitions, 3518 flow [2022-12-12 22:13:26,014 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 215 transitions, 3518 flow [2022-12-12 22:13:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:26,015 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:26,015 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:26,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 22:13:26,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:26,222 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)] === [2022-12-12 22:13:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1207013317, now seen corresponding path program 2 times [2022-12-12 22:13:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:26,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403967707] [2022-12-12 22:13:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:26,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403967707] [2022-12-12 22:13:26,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403967707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:26,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654141158] [2022-12-12 22:13:26,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:13:26,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:26,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:26,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:26,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 22:13:26,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:13:26,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:26,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:26,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:26,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:27,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654141158] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:27,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:13:27,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2022-12-12 22:13:27,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635785045] [2022-12-12 22:13:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-12 22:13:27,010 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:27,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 215 transitions, 3518 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:27,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:27,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:27,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:27,483 INFO L130 PetriNetUnfolder]: 1654/2435 cut-off events. [2022-12-12 22:13:27,483 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2022-12-12 22:13:27,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22076 conditions, 2435 events. 1654/2435 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10381 event pairs, 47 based on Foata normal form. 0/1888 useless extension candidates. Maximal degree in co-relation 18930. Up to 2433 conditions per place. [2022-12-12 22:13:27,500 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 285 selfloop transitions, 32 changer transitions 0/317 dead transitions. [2022-12-12 22:13:27,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 317 transitions, 5820 flow [2022-12-12 22:13:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2022-12-12 22:13:27,502 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2022-12-12 22:13:27,502 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2022-12-12 22:13:27,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 317 transitions, 5820 flow [2022-12-12 22:13:27,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 317 transitions, 5820 flow [2022-12-12 22:13:27,519 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 317 transitions, 5820 flow [2022-12-12 22:13:27,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:27,519 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:27,519 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:27,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:27,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:27,726 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)] === [2022-12-12 22:13:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 744749071, now seen corresponding path program 3 times [2022-12-12 22:13:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:27,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182556311] [2022-12-12 22:13:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182556311] [2022-12-12 22:13:28,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182556311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253291875] [2022-12-12 22:13:28,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 22:13:28,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:28,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:28,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 22:13:28,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 22:13:28,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:28,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:28,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:28,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:28,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253291875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:28,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:28,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015727839] [2022-12-12 22:13:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:28,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:28,246 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:28,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 317 transitions, 5820 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:28,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:28,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:28,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:28,729 INFO L130 PetriNetUnfolder]: 1594/2341 cut-off events. [2022-12-12 22:13:28,729 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-12-12 22:13:28,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23567 conditions, 2341 events. 1594/2341 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9863 event pairs, 47 based on Foata normal form. 16/1830 useless extension candidates. Maximal degree in co-relation 20304. Up to 2339 conditions per place. [2022-12-12 22:13:28,746 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 263 selfloop transitions, 20 changer transitions 14/297 dead transitions. [2022-12-12 22:13:28,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 297 transitions, 6045 flow [2022-12-12 22:13:28,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2022-12-12 22:13:28,747 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2022-12-12 22:13:28,748 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2022-12-12 22:13:28,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 297 transitions, 6045 flow [2022-12-12 22:13:28,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 283 transitions, 5759 flow [2022-12-12 22:13:28,764 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 283 transitions, 5759 flow [2022-12-12 22:13:28,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:28,765 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:28,765 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:28,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 22:13:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:28,973 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)] === [2022-12-12 22:13:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash 692697419, now seen corresponding path program 4 times [2022-12-12 22:13:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:28,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069340876] [2022-12-12 22:13:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:29,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:29,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069340876] [2022-12-12 22:13:29,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069340876] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:29,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850926153] [2022-12-12 22:13:29,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 22:13:29,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:29,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:29,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:29,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 22:13:29,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 22:13:29,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:29,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 22:13:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:29,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:29,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850926153] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:29,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:13:29,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2022-12-12 22:13:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543129408] [2022-12-12 22:13:29,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:29,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:29,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 22:13:29,551 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:29,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 283 transitions, 5759 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:29,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:29,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:29,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:30,103 INFO L130 PetriNetUnfolder]: 1622/2365 cut-off events. [2022-12-12 22:13:30,103 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-12-12 22:13:30,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26171 conditions, 2365 events. 1622/2365 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9757 event pairs, 15 based on Foata normal form. 0/1852 useless extension candidates. Maximal degree in co-relation 22590. Up to 2363 conditions per place. [2022-12-12 22:13:30,120 INFO L137 encePairwiseOnDemand]: 22/30 looper letters, 307 selfloop transitions, 58 changer transitions 14/379 dead transitions. [2022-12-12 22:13:30,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 379 transitions, 8464 flow [2022-12-12 22:13:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 22:13:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 22:13:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2022-12-12 22:13:30,122 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-12 22:13:30,122 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2022-12-12 22:13:30,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 379 transitions, 8464 flow [2022-12-12 22:13:30,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 365 transitions, 8150 flow [2022-12-12 22:13:30,140 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 365 transitions, 8150 flow [2022-12-12 22:13:30,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:30,140 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:30,140 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:30,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:30,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 22:13:30,351 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)] === [2022-12-12 22:13:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1598548983, now seen corresponding path program 5 times [2022-12-12 22:13:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297827806] [2022-12-12 22:13:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:30,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:30,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297827806] [2022-12-12 22:13:30,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297827806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:30,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823123834] [2022-12-12 22:13:30,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 22:13:30,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:30,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:30,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:30,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 22:13:31,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 22:13:31,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:31,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:31,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:31,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:31,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823123834] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:31,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:13:31,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2022-12-12 22:13:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675034740] [2022-12-12 22:13:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:31,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:31,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-12 22:13:31,693 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:31,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 365 transitions, 8150 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:31,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:31,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:31,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:32,224 INFO L130 PetriNetUnfolder]: 1630/2373 cut-off events. [2022-12-12 22:13:32,225 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-12 22:13:32,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28633 conditions, 2373 events. 1630/2373 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9810 event pairs, 15 based on Foata normal form. 0/1900 useless extension candidates. Maximal degree in co-relation 24708. Up to 2371 conditions per place. [2022-12-12 22:13:32,245 INFO L137 encePairwiseOnDemand]: 22/30 looper letters, 327 selfloop transitions, 52 changer transitions 0/379 dead transitions. [2022-12-12 22:13:32,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 379 transitions, 9219 flow [2022-12-12 22:13:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:13:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:13:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2022-12-12 22:13:32,247 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-12-12 22:13:32,247 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2022-12-12 22:13:32,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 379 transitions, 9219 flow [2022-12-12 22:13:32,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 379 transitions, 9219 flow [2022-12-12 22:13:32,268 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 379 transitions, 9219 flow [2022-12-12 22:13:32,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:32,268 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:32,269 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:32,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:32,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:32,476 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)] === [2022-12-12 22:13:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash -744655925, now seen corresponding path program 6 times [2022-12-12 22:13:32,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:32,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034383037] [2022-12-12 22:13:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:32,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034383037] [2022-12-12 22:13:32,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034383037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394813795] [2022-12-12 22:13:32,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 22:13:32,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:32,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:32,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:32,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 22:13:32,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 22:13:32,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:32,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:32,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:33,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:33,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394813795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:33,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:33,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752446150] [2022-12-12 22:13:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:33,002 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:33,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 379 transitions, 9219 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:33,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:33,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:33,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:33,478 INFO L130 PetriNetUnfolder]: 1570/2279 cut-off events. [2022-12-12 22:13:33,478 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2022-12-12 22:13:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29780 conditions, 2279 events. 1570/2279 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9255 event pairs, 15 based on Foata normal form. 16/1842 useless extension candidates. Maximal degree in co-relation 25824. Up to 2277 conditions per place. [2022-12-12 22:13:33,502 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 319 selfloop transitions, 26 changer transitions 14/359 dead transitions. [2022-12-12 22:13:33,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 359 transitions, 9448 flow [2022-12-12 22:13:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2022-12-12 22:13:33,503 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46 [2022-12-12 22:13:33,505 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2022-12-12 22:13:33,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 359 transitions, 9448 flow [2022-12-12 22:13:33,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 345 transitions, 9078 flow [2022-12-12 22:13:33,525 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 345 transitions, 9078 flow [2022-12-12 22:13:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:33,525 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:33,525 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:33,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-12 22:13:33,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:33,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash -300167076, now seen corresponding path program 1 times [2022-12-12 22:13:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:33,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683350884] [2022-12-12 22:13:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:34,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:34,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683350884] [2022-12-12 22:13:34,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683350884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:34,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968985057] [2022-12-12 22:13:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:34,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:34,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:34,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 22:13:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:34,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 22:13:34,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:34,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:34,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968985057] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:34,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:13:34,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2022-12-12 22:13:34,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934958204] [2022-12-12 22:13:34,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:34,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 22:13:34,302 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:34,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 345 transitions, 9078 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:34,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:34,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:34,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:34,811 INFO L130 PetriNetUnfolder]: 1668/2403 cut-off events. [2022-12-12 22:13:34,811 INFO L131 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2022-12-12 22:13:34,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33797 conditions, 2403 events. 1668/2403 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9743 event pairs, 15 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 29316. Up to 2401 conditions per place. [2022-12-12 22:13:34,831 INFO L137 encePairwiseOnDemand]: 23/30 looper letters, 385 selfloop transitions, 34 changer transitions 0/419 dead transitions. [2022-12-12 22:13:34,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 419 transitions, 11858 flow [2022-12-12 22:13:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2022-12-12 22:13:34,833 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46 [2022-12-12 22:13:34,834 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2022-12-12 22:13:34,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 419 transitions, 11858 flow [2022-12-12 22:13:34,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 419 transitions, 11858 flow [2022-12-12 22:13:34,886 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 419 transitions, 11858 flow [2022-12-12 22:13:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:34,886 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:34,886 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:34,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 22:13:35,087 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash -11030198, now seen corresponding path program 2 times [2022-12-12 22:13:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:35,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306058745] [2022-12-12 22:13:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:35,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306058745] [2022-12-12 22:13:35,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306058745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:35,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318743394] [2022-12-12 22:13:35,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:13:35,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:35,348 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:35,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 22:13:35,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:13:35,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:35,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:35,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:35,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:35,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318743394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:35,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:35,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:35,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999939232] [2022-12-12 22:13:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:35,579 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:35,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 419 transitions, 11858 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:35,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:35,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:35,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:36,129 INFO L130 PetriNetUnfolder]: 1654/2389 cut-off events. [2022-12-12 22:13:36,129 INFO L131 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2022-12-12 22:13:36,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35991 conditions, 2389 events. 1654/2389 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9731 event pairs, 15 based on Foata normal form. 14/1960 useless extension candidates. Maximal degree in co-relation 31224. Up to 2387 conditions per place. [2022-12-12 22:13:36,149 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 399 selfloop transitions, 30 changer transitions 12/441 dead transitions. [2022-12-12 22:13:36,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 441 transitions, 13362 flow [2022-12-12 22:13:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2022-12-12 22:13:36,150 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2022-12-12 22:13:36,151 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 53 predicate places. [2022-12-12 22:13:36,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 441 transitions, 13362 flow [2022-12-12 22:13:36,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 429 transitions, 12999 flow [2022-12-12 22:13:36,171 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 429 transitions, 12999 flow [2022-12-12 22:13:36,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:36,172 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:36,172 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:36,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:36,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 22:13:36,378 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash 339216296, now seen corresponding path program 3 times [2022-12-12 22:13:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029357547] [2022-12-12 22:13:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:36,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:36,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029357547] [2022-12-12 22:13:36,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029357547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770696037] [2022-12-12 22:13:36,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 22:13:36,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:36,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:36,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:36,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 22:13:36,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 22:13:36,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:36,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:36,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:36,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:36,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770696037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:36,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:36,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:36,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082704599] [2022-12-12 22:13:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:36,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:36,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:36,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:36,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:36,849 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:36,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 429 transitions, 12999 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:36,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:36,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:36,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:37,439 INFO L130 PetriNetUnfolder]: 1704/2455 cut-off events. [2022-12-12 22:13:37,439 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-12-12 22:13:37,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39439 conditions, 2455 events. 1704/2455 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9905 event pairs, 15 based on Foata normal form. 0/2024 useless extension candidates. Maximal degree in co-relation 34164. Up to 2453 conditions per place. [2022-12-12 22:13:37,463 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 415 selfloop transitions, 32 changer transitions 0/447 dead transitions. [2022-12-12 22:13:37,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 447 transitions, 14439 flow [2022-12-12 22:13:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:13:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:13:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2022-12-12 22:13:37,465 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2022-12-12 22:13:37,465 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 57 predicate places. [2022-12-12 22:13:37,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 447 transitions, 14439 flow [2022-12-12 22:13:37,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 447 transitions, 14439 flow [2022-12-12 22:13:37,489 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 447 transitions, 14439 flow [2022-12-12 22:13:37,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:37,489 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:37,490 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:37,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:37,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 22:13:37,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1345300004, now seen corresponding path program 4 times [2022-12-12 22:13:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:37,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714683788] [2022-12-12 22:13:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:37,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714683788] [2022-12-12 22:13:37,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714683788] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:37,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728958102] [2022-12-12 22:13:37,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 22:13:37,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:37,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:37,956 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:37,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 22:13:38,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 22:13:38,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:38,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 22:13:38,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:38,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:38,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728958102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:38,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:38,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:38,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285285958] [2022-12-12 22:13:38,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:38,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:38,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:38,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:38,190 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:38,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 447 transitions, 14439 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:38,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:38,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:38,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:38,797 INFO L130 PetriNetUnfolder]: 1710/2475 cut-off events. [2022-12-12 22:13:38,797 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-12 22:13:38,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42236 conditions, 2475 events. 1710/2475 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10128 event pairs, 15 based on Foata normal form. 14/2056 useless extension candidates. Maximal degree in co-relation 36600. Up to 2473 conditions per place. [2022-12-12 22:13:38,819 INFO L137 encePairwiseOnDemand]: 25/30 looper letters, 455 selfloop transitions, 42 changer transitions 24/521 dead transitions. [2022-12-12 22:13:38,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 521 transitions, 17870 flow [2022-12-12 22:13:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2022-12-12 22:13:38,820 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2022-12-12 22:13:38,822 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 61 predicate places. [2022-12-12 22:13:38,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 521 transitions, 17870 flow [2022-12-12 22:13:38,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 497 transitions, 17048 flow [2022-12-12 22:13:38,847 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 497 transitions, 17048 flow [2022-12-12 22:13:38,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:38,847 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:38,847 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:38,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:39,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1412301676, now seen corresponding path program 5 times [2022-12-12 22:13:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:39,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647097118] [2022-12-12 22:13:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:39,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647097118] [2022-12-12 22:13:39,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647097118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:39,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387562014] [2022-12-12 22:13:39,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 22:13:39,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:39,280 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:39,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 22:13:39,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 22:13:39,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:39,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:39,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:39,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:39,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387562014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:39,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:39,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191171020] [2022-12-12 22:13:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:39,992 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:39,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 497 transitions, 17048 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:39,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:39,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:39,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:40,630 INFO L130 PetriNetUnfolder]: 1612/2349 cut-off events. [2022-12-12 22:13:40,631 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-12-12 22:13:40,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42442 conditions, 2349 events. 1612/2349 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9660 event pairs, 15 based on Foata normal form. 0/1992 useless extension candidates. Maximal degree in co-relation 36804. Up to 2347 conditions per place. [2022-12-12 22:13:40,653 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 447 selfloop transitions, 44 changer transitions 0/491 dead transitions. [2022-12-12 22:13:40,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 491 transitions, 17826 flow [2022-12-12 22:13:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:13:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:13:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2022-12-12 22:13:40,654 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-12 22:13:40,655 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 65 predicate places. [2022-12-12 22:13:40,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 491 transitions, 17826 flow [2022-12-12 22:13:40,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 491 transitions, 17826 flow [2022-12-12 22:13:40,679 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 491 transitions, 17826 flow [2022-12-12 22:13:40,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:40,680 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:40,680 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:40,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 22:13:40,887 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1062055182, now seen corresponding path program 6 times [2022-12-12 22:13:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425515275] [2022-12-12 22:13:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425515275] [2022-12-12 22:13:41,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425515275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:41,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556744762] [2022-12-12 22:13:41,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 22:13:41,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:41,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:41,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 22:13:41,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 22:13:41,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:13:41,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 22:13:41,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 22:13:41,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:13:41,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556744762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:13:41,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:13:41,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-12 22:13:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571123165] [2022-12-12 22:13:41,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:13:41,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:13:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:13:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:13:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:13:41,517 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 30 [2022-12-12 22:13:41,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 491 transitions, 17826 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:41,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:13:41,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 30 [2022-12-12 22:13:41,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:13:42,049 INFO L130 PetriNetUnfolder]: 1518/2195 cut-off events. [2022-12-12 22:13:42,050 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-12-12 22:13:42,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41860 conditions, 2195 events. 1518/2195 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8749 event pairs, 15 based on Foata normal form. 14/1874 useless extension candidates. Maximal degree in co-relation 36336. Up to 2193 conditions per place. [2022-12-12 22:13:42,071 INFO L137 encePairwiseOnDemand]: 24/30 looper letters, 397 selfloop transitions, 38 changer transitions 12/447 dead transitions. [2022-12-12 22:13:42,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 447 transitions, 17121 flow [2022-12-12 22:13:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:13:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:13:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2022-12-12 22:13:42,072 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42 [2022-12-12 22:13:42,072 INFO L295 CegarLoopForPetriNet]: 34 programPoint places, 69 predicate places. [2022-12-12 22:13:42,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 447 transitions, 17121 flow [2022-12-12 22:13:42,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 435 transitions, 16662 flow [2022-12-12 22:13:42,094 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 435 transitions, 16662 flow [2022-12-12 22:13:42,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:13:42,094 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:13:42,094 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2022-12-12 22:13:42,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-12 22:13:42,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-12 22:13:42,301 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:13:42,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:13:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash -714288496, now seen corresponding path program 1 times [2022-12-12 22:13:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:13:42,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792907354] [2022-12-12 22:13:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:13:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-12 22:13:42,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:13:42,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792907354] [2022-12-12 22:13:42,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792907354] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:13:42,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682340921] [2022-12-12 22:13:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:13:42,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:13:42,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:13:42,520 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:13:42,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 22:13:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:13:42,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-12 22:13:42,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:13:43,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:13:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:13:43,132 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 22:13:43,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-12-12 22:13:43,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:13:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:13:43,201 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-12 22:13:43,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-12-12 22:13:43,522 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:43,522 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 40 treesize of output 40 [2022-12-12 22:13:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 22:13:43,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:13:45,643 INFO L321 Elim1Store]: treesize reduction 15, result has 95.4 percent of original size [2022-12-12 22:13:45,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 6897 treesize of output 6426 [2022-12-12 22:13:45,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:45,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6104 treesize of output 6033 [2022-12-12 22:13:46,058 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:46,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6008 treesize of output 5985 [2022-12-12 22:13:46,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:46,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5960 treesize of output 5857 [2022-12-12 22:13:46,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:46,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5832 treesize of output 5601 [2022-12-12 22:13:46,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:46,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5576 treesize of output 5473 [2022-12-12 22:13:46,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:46,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5448 treesize of output 5217 [2022-12-12 22:13:46,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:46,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5192 treesize of output 5057 [2022-12-12 22:13:47,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:13:47,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5032 treesize of output 4977 Received shutdown request... [2022-12-12 22:26:52,584 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-12 22:26:52,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 22:26:52,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-12 22:26:52,617 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 22:26:52,617 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 22:26:52,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:26:52,793 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 43 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 21ms.. [2022-12-12 22:26:52,794 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 22:26:52,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 22:26:52,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 22:26:52,795 INFO L445 BasicCegarLoop]: Path program histogram: [6, 6, 4, 1, 1, 1] [2022-12-12 22:26:52,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 22:26:52,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 22:26:52,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 10:26:52 BasicIcfg [2022-12-12 22:26:52,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 22:26:52,800 INFO L158 Benchmark]: Toolchain (without parser) took 824436.92ms. Allocated memory was 184.5MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 159.6MB in the beginning and 975.7MB in the end (delta: -816.1MB). Peak memory consumption was 660.8MB. Max. memory is 8.0GB. [2022-12-12 22:26:52,801 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory was 160.4MB in the beginning and 160.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 22:26:52,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.56ms. Allocated memory is still 184.5MB. Free memory was 159.6MB in the beginning and 147.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 22:26:52,801 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.14ms. Allocated memory is still 184.5MB. Free memory was 147.5MB in the beginning and 144.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 22:26:52,801 INFO L158 Benchmark]: Boogie Preprocessor took 37.22ms. Allocated memory is still 184.5MB. Free memory was 144.9MB in the beginning and 142.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 22:26:52,802 INFO L158 Benchmark]: RCFGBuilder took 609.02ms. Allocated memory is still 184.5MB. Free memory was 142.8MB in the beginning and 117.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-12-12 22:26:52,802 INFO L158 Benchmark]: TraceAbstraction took 823414.68ms. Allocated memory was 184.5MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 116.6MB in the beginning and 975.7MB in the end (delta: -859.1MB). Peak memory consumption was 617.8MB. Max. memory is 8.0GB. [2022-12-12 22:26:52,805 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 184.5MB. Free memory was 160.4MB in the beginning and 160.3MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 310.56ms. Allocated memory is still 184.5MB. Free memory was 159.6MB in the beginning and 147.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.14ms. Allocated memory is still 184.5MB. Free memory was 147.5MB in the beginning and 144.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.22ms. Allocated memory is still 184.5MB. Free memory was 144.9MB in the beginning and 142.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 609.02ms. Allocated memory is still 184.5MB. Free memory was 142.8MB in the beginning and 117.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 823414.68ms. Allocated memory was 184.5MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 116.6MB in the beginning and 975.7MB in the end (delta: -859.1MB). Peak memory consumption was 617.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 286 PlacesBefore, 34 PlacesAfterwards, 305 TransitionsBefore, 30 TransitionsAfterwards, 15390 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 128 TrivialYvCompositions, 124 ConcurrentYvCompositions, 23 ChoiceCompositions, 275 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9492, independent: 9469, independent conditional: 9469, independent unconditional: 0, dependent: 23, dependent conditional: 23, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 9492, independent: 9469, independent conditional: 0, independent unconditional: 9469, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 9492, independent: 9469, independent conditional: 0, independent unconditional: 9469, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 9492, independent: 9469, independent conditional: 0, independent unconditional: 9469, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8758, independent: 8740, independent conditional: 0, independent unconditional: 8740, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8758, independent: 8740, independent conditional: 0, independent unconditional: 8740, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9492, independent: 729, independent conditional: 0, independent unconditional: 729, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 8758, unknown conditional: 0, unknown unconditional: 8758] , Statistics on independence cache: Total cache size (in pairs): 18104, Positive cache size: 18086, Positive conditional cache size: 0, Positive unconditional cache size: 18086, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 43 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 21ms.. - TimeoutResultAtElement [Line: 101]: 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 43 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 21ms.. - TimeoutResultAtElement [Line: 102]: 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 43 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 21ms.. - TimeoutResultAtElement [Line: 103]: 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 43 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 21ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 416 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.4s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 823.3s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 653 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 653 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2865 IncrementalHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 0 mSDtfsCounter, 2865 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 987 GetRequests, 834 SyntacticMatches, 7 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17826occurred in iteration=17, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 3075 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 1300 NumberOfCodeBlocks, 1261 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1522 ConstructedInterpolants, 0 QuantifiedInterpolants, 3889 SizeOfPredicates, 60 NumberOfNonLiveVariables, 7234 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 41 InterpolantComputations, 16 PerfectInterpolantSequences, 1600/1652 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