/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:44:19,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:44:19,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:44:19,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:44:19,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:44:19,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:44:19,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:44:19,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:44:19,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:44:19,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:44:19,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:44:19,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:44:19,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:44:19,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:44:19,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:44:19,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:44:19,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:44:19,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:44:19,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:44:19,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:44:19,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:44:19,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:44:19,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:44:19,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:44:19,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:44:19,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:44:19,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:44:19,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:44:19,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:44:19,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:44:19,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:44:19,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:44:19,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:44:19,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:44:19,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:44:19,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:44:19,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:44:19,436 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:44:19,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:44:19,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:44:19,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:44:19,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:44:19,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:44:19,439 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:44:19,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:44:19,439 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:44:19,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:44:19,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:44:19,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:44:19,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:44:19,441 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:44:19,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:44:19,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:44:19,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:44:19,605 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:44:19,605 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:44:19,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c [2023-01-27 19:44:20,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:44:20,761 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:44:20,761 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c [2023-01-27 19:44:20,769 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7f2659c/f8fd1357db554eb7838c307ba244e873/FLAGafc809eec [2023-01-27 19:44:20,778 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e7f2659c/f8fd1357db554eb7838c307ba244e873 [2023-01-27 19:44:20,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:44:20,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:44:20,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:44:20,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:44:20,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:44:20,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c098781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20, skipping insertion in model container [2023-01-27 19:44:20,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:44:20,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:44:20,887 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c[1849,1862] [2023-01-27 19:44:20,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:44:20,895 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:44:20,906 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp1x3.wvr.c[1849,1862] [2023-01-27 19:44:20,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:44:20,915 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:44:20,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20 WrapperNode [2023-01-27 19:44:20,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:44:20,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:44:20,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:44:20,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:44:20,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,948 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-01-27 19:44:20,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:44:20,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:44:20,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:44:20,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:44:20,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,963 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:44:20,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:44:20,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:44:20,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:44:20,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (1/1) ... [2023-01-27 19:44:20,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:44:20,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:20,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:44:20,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:44:21,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:44:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 19:44:21,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 19:44:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 19:44:21,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 19:44:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:44:21,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:44:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:44:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:44:21,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:44:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:44:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:44:21,018 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:44:21,076 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:44:21,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:44:21,212 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:44:21,217 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:44:21,217 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 19:44:21,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:44:21 BoogieIcfgContainer [2023-01-27 19:44:21,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:44:21,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:44:21,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:44:21,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:44:21,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:44:20" (1/3) ... [2023-01-27 19:44:21,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c35a6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:44:21, skipping insertion in model container [2023-01-27 19:44:21,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:44:20" (2/3) ... [2023-01-27 19:44:21,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c35a6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:44:21, skipping insertion in model container [2023-01-27 19:44:21,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:44:21" (3/3) ... [2023-01-27 19:44:21,224 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2023-01-27 19:44:21,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:44:21,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:44:21,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:44:21,315 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 19:44:21,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 170 flow [2023-01-27 19:44:21,395 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2023-01-27 19:44:21,395 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 19:44:21,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 6/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-27 19:44:21,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 170 flow [2023-01-27 19:44:21,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 146 flow [2023-01-27 19:44:21,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:44:21,408 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 146 flow [2023-01-27 19:44:21,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 146 flow [2023-01-27 19:44:21,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 146 flow [2023-01-27 19:44:21,429 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-01-27 19:44:21,429 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 19:44:21,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 67 events. 6/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-27 19:44:21,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 252 [2023-01-27 19:44:22,954 INFO L134 LiptonReduction]: Checked pairs total: 297 [2023-01-27 19:44:22,954 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-01-27 19:44:22,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:44:22,972 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;@416ff620, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:44:22,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 19:44:22,974 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-01-27 19:44:22,974 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 19:44:22,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:22,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:22,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:44:22,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1136073076, now seen corresponding path program 1 times [2023-01-27 19:44:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067727339] [2023-01-27 19:44:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:23,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:23,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067727339] [2023-01-27 19:44:23,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067727339] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:23,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:23,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:44:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064690329] [2023-01-27 19:44:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:23,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:44:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:44:23,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:44:23,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 142 [2023-01-27 19:44:23,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:23,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 142 [2023-01-27 19:44:23,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:23,402 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-01-27 19:44:23,403 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-27 19:44:23,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-01-27 19:44:23,406 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-01-27 19:44:23,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-01-27 19:44:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:44:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:44:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-01-27 19:44:23,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507042253521127 [2023-01-27 19:44:23,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-01-27 19:44:23,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-01-27 19:44:23,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:23,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-01-27 19:44:23,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,426 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 192 transitions. [2023-01-27 19:44:23,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-01-27 19:44:23,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 19:44:23,429 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-01-27 19:44:23,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-01-27 19:44:23,432 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-27 19:44:23,432 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-01-27 19:44:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:23,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:23,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:44:23,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:44:23,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1884749856, now seen corresponding path program 1 times [2023-01-27 19:44:23,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674772235] [2023-01-27 19:44:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:23,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:23,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674772235] [2023-01-27 19:44:23,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674772235] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:23,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:23,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:23,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615413977] [2023-01-27 19:44:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:23,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:23,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:23,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:44:23,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:23,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:44:23,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:23,593 INFO L130 PetriNetUnfolder]: 39/75 cut-off events. [2023-01-27 19:44:23,593 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-27 19:44:23,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 75 events. 39/75 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 2 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 55. Up to 28 conditions per place. [2023-01-27 19:44:23,595 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 24 selfloop transitions, 6 changer transitions 4/34 dead transitions. [2023-01-27 19:44:23,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 34 transitions, 165 flow [2023-01-27 19:44:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2023-01-27 19:44:23,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295774647887324 [2023-01-27 19:44:23,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2023-01-27 19:44:23,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2023-01-27 19:44:23,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:23,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2023-01-27 19:44:23,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,604 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 5 states and 305 transitions. [2023-01-27 19:44:23,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 34 transitions, 165 flow [2023-01-27 19:44:23,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 34 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:23,606 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 70 flow [2023-01-27 19:44:23,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-01-27 19:44:23,607 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-01-27 19:44:23,607 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 70 flow [2023-01-27 19:44:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:23,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:44:23,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:44:23,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1479151157, now seen corresponding path program 1 times [2023-01-27 19:44:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434445658] [2023-01-27 19:44:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:23,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434445658] [2023-01-27 19:44:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434445658] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:23,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:23,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:44:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148591221] [2023-01-27 19:44:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:23,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:44:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:44:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:44:23,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:44:23,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:23,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:44:23,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:23,812 INFO L130 PetriNetUnfolder]: 32/66 cut-off events. [2023-01-27 19:44:23,812 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-01-27 19:44:23,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 66 events. 32/66 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 6 based on Foata normal form. 4/70 useless extension candidates. Maximal degree in co-relation 57. Up to 45 conditions per place. [2023-01-27 19:44:23,813 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 15 selfloop transitions, 3 changer transitions 8/26 dead transitions. [2023-01-27 19:44:23,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 26 transitions, 142 flow [2023-01-27 19:44:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:44:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:44:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-01-27 19:44:23,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278169014084507 [2023-01-27 19:44:23,815 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-01-27 19:44:23,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-01-27 19:44:23,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:23,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-01-27 19:44:23,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,817 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,817 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 70 flow. Second operand 4 states and 243 transitions. [2023-01-27 19:44:23,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 26 transitions, 142 flow [2023-01-27 19:44:23,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:23,819 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 62 flow [2023-01-27 19:44:23,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2023-01-27 19:44:23,820 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2023-01-27 19:44:23,822 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 62 flow [2023-01-27 19:44:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:23,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:23,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:44:23,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:44:23,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1582616416, now seen corresponding path program 2 times [2023-01-27 19:44:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676339784] [2023-01-27 19:44:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:23,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676339784] [2023-01-27 19:44:23,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676339784] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139142757] [2023-01-27 19:44:23,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:44:23,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:23,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:23,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:44:23,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:44:23,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:44:23,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:44:23,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:44:23,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:24,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139142757] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:44:24,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:44:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-27 19:44:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718247404] [2023-01-27 19:44:24,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:44:24,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:44:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:44:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:44:24,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:44:24,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 62 flow. Second operand has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:24,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:44:24,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:24,344 INFO L130 PetriNetUnfolder]: 34/63 cut-off events. [2023-01-27 19:44:24,344 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-01-27 19:44:24,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 63 events. 34/63 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 4 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 49. Up to 39 conditions per place. [2023-01-27 19:44:24,345 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 22 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2023-01-27 19:44:24,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 155 flow [2023-01-27 19:44:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 300 transitions. [2023-01-27 19:44:24,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225352112676056 [2023-01-27 19:44:24,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 300 transitions. [2023-01-27 19:44:24,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 300 transitions. [2023-01-27 19:44:24,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:24,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 300 transitions. [2023-01-27 19:44:24,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,349 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 62 flow. Second operand 5 states and 300 transitions. [2023-01-27 19:44:24,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 155 flow [2023-01-27 19:44:24,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 147 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 19:44:24,350 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 91 flow [2023-01-27 19:44:24,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-01-27 19:44:24,350 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 7 predicate places. [2023-01-27 19:44:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 91 flow [2023-01-27 19:44:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:24,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:24,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:44:24,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:24,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:44:24,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash 410010517, now seen corresponding path program 2 times [2023-01-27 19:44:24,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:24,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290876479] [2023-01-27 19:44:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:24,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290876479] [2023-01-27 19:44:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290876479] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:44:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:44:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:44:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174990888] [2023-01-27 19:44:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:44:24,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:44:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:44:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:44:24,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2023-01-27 19:44:24,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:24,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2023-01-27 19:44:24,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:24,705 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-01-27 19:44:24,705 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-01-27 19:44:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 73 events. 40/73 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 4 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 119. Up to 61 conditions per place. [2023-01-27 19:44:24,708 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 21 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-01-27 19:44:24,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 178 flow [2023-01-27 19:44:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:44:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:44:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 271 transitions. [2023-01-27 19:44:24,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3816901408450704 [2023-01-27 19:44:24,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 271 transitions. [2023-01-27 19:44:24,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 271 transitions. [2023-01-27 19:44:24,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:44:24,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 271 transitions. [2023-01-27 19:44:24,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,711 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 91 flow. Second operand 5 states and 271 transitions. [2023-01-27 19:44:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 178 flow [2023-01-27 19:44:24,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 173 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:44:24,714 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 127 flow [2023-01-27 19:44:24,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-01-27 19:44:24,716 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-01-27 19:44:24,716 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 127 flow [2023-01-27 19:44:24,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:24,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:44:24,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:44:24,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:44:24,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:44:24,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:44:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash 656812837, now seen corresponding path program 1 times [2023-01-27 19:44:24,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:44:24,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900793269] [2023-01-27 19:44:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:44:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:44:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900793269] [2023-01-27 19:44:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900793269] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:44:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317434625] [2023-01-27 19:44:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:44:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:44:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:44:25,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:44:25,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:44:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:44:25,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 19:44:25,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:44:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:34,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:44:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:44:38,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317434625] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:44:38,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:44:38,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-01-27 19:44:38,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395086537] [2023-01-27 19:44:38,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:44:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 19:44:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:44:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 19:44:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=147, Unknown=4, NotChecked=0, Total=210 [2023-01-27 19:44:38,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:44:38,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 127 flow. Second operand has 15 states, 15 states have (on average 56.333333333333336) internal successors, (845), 15 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:44:38,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:44:38,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:44:38,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:44:50,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:44:58,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:44:59,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:01,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:16,717 WARN L222 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 77 DAG size of output: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 19:45:19,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:27,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:33,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:34,359 INFO L130 PetriNetUnfolder]: 159/307 cut-off events. [2023-01-27 19:45:34,360 INFO L131 PetriNetUnfolder]: For 608/608 co-relation queries the response was YES. [2023-01-27 19:45:34,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 307 events. 159/307 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1199 event pairs, 4 based on Foata normal form. 13/320 useless extension candidates. Maximal degree in co-relation 638. Up to 105 conditions per place. [2023-01-27 19:45:34,362 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 67 selfloop transitions, 31 changer transitions 19/117 dead transitions. [2023-01-27 19:45:34,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 117 transitions, 803 flow [2023-01-27 19:45:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 19:45:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 19:45:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1031 transitions. [2023-01-27 19:45:34,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270919635459818 [2023-01-27 19:45:34,367 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1031 transitions. [2023-01-27 19:45:34,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1031 transitions. [2023-01-27 19:45:34,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:45:34,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1031 transitions. [2023-01-27 19:45:34,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 60.64705882352941) internal successors, (1031), 17 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:45:34,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 142.0) internal successors, (2556), 18 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:45:34,372 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 142.0) internal successors, (2556), 18 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:45:34,372 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 127 flow. Second operand 17 states and 1031 transitions. [2023-01-27 19:45:34,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 117 transitions, 803 flow [2023-01-27 19:45:34,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 117 transitions, 776 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-01-27 19:45:34,376 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 448 flow [2023-01-27 19:45:34,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=448, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-01-27 19:45:34,376 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-01-27 19:45:34,377 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 448 flow [2023-01-27 19:45:34,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.333333333333336) internal successors, (845), 15 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:45:34,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:45:34,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:45:34,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:45:34,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 19:45:34,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:45:34,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:45:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1905891163, now seen corresponding path program 2 times [2023-01-27 19:45:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:45:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423105286] [2023-01-27 19:45:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:45:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:45:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:45:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:45:34,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:45:34,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423105286] [2023-01-27 19:45:34,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423105286] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:45:34,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059800783] [2023-01-27 19:45:34,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:45:34,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:45:34,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:45:34,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:45:34,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:45:34,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:45:34,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:45:34,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 19:45:34,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:45:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:45:38,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:45:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:45:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059800783] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:45:44,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:45:44,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-01-27 19:45:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608998805] [2023-01-27 19:45:44,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:45:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 19:45:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:45:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 19:45:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=151, Unknown=2, NotChecked=0, Total=210 [2023-01-27 19:45:44,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:45:44,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 448 flow. Second operand has 15 states, 15 states have (on average 56.333333333333336) internal successors, (845), 15 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:45:44,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:45:44,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:45:44,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:45:48,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:45:49,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:05,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:13,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:15,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:17,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:19,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:32,136 WARN L222 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 83 DAG size of output: 55 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 19:46:34,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:37,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:40,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:48,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:50,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:54,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:57,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:59,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:46:59,985 INFO L130 PetriNetUnfolder]: 233/461 cut-off events. [2023-01-27 19:46:59,985 INFO L131 PetriNetUnfolder]: For 3744/3744 co-relation queries the response was YES. [2023-01-27 19:46:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2585 conditions, 461 events. 233/461 cut-off events. For 3744/3744 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2125 event pairs, 24 based on Foata normal form. 5/466 useless extension candidates. Maximal degree in co-relation 2511. Up to 258 conditions per place. [2023-01-27 19:46:59,989 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 94 selfloop transitions, 31 changer transitions 13/138 dead transitions. [2023-01-27 19:46:59,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 1340 flow [2023-01-27 19:46:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 19:46:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 19:46:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1028 transitions. [2023-01-27 19:46:59,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258492129246065 [2023-01-27 19:46:59,992 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1028 transitions. [2023-01-27 19:46:59,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1028 transitions. [2023-01-27 19:46:59,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:59,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1028 transitions. [2023-01-27 19:46:59,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 60.470588235294116) internal successors, (1028), 17 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:59,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 142.0) internal successors, (2556), 18 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:59,997 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 142.0) internal successors, (2556), 18 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:59,997 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 448 flow. Second operand 17 states and 1028 transitions. [2023-01-27 19:46:59,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 1340 flow [2023-01-27 19:47:00,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 1203 flow, removed 67 selfloop flow, removed 2 redundant places. [2023-01-27 19:47:00,009 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 767 flow [2023-01-27 19:47:00,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=767, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-01-27 19:47:00,009 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 61 predicate places. [2023-01-27 19:47:00,009 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 767 flow [2023-01-27 19:47:00,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.333333333333336) internal successors, (845), 15 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:47:00,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:47:00,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:47:00,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:47:00,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:47:00,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:47:00,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:47:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1005302345, now seen corresponding path program 3 times [2023-01-27 19:47:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:47:00,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698617602] [2023-01-27 19:47:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:47:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:47:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:47:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:47:00,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:47:00,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698617602] [2023-01-27 19:47:00,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698617602] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:47:00,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409366398] [2023-01-27 19:47:00,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:47:00,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:47:00,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:47:00,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:47:00,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:47:02,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 19:47:02,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:47:02,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 19:47:02,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:47:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:47:02,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:47:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409366398] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:47:02,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:47:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-01-27 19:47:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709040278] [2023-01-27 19:47:02,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:47:02,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:47:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:47:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:47:02,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:47:02,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 142 [2023-01-27 19:47:02,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:47:02,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:47:02,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 142 [2023-01-27 19:47:02,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:47:02,430 INFO L130 PetriNetUnfolder]: 109/217 cut-off events. [2023-01-27 19:47:02,430 INFO L131 PetriNetUnfolder]: For 3401/3401 co-relation queries the response was YES. [2023-01-27 19:47:02,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 217 events. 109/217 cut-off events. For 3401/3401 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 755 event pairs, 20 based on Foata normal form. 4/221 useless extension candidates. Maximal degree in co-relation 1460. Up to 213 conditions per place. [2023-01-27 19:47:02,433 INFO L137 encePairwiseOnDemand]: 139/142 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-01-27 19:47:02,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 45 transitions, 638 flow [2023-01-27 19:47:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:47:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:47:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-01-27 19:47:02,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.431924882629108 [2023-01-27 19:47:02,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-01-27 19:47:02,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-01-27 19:47:02,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:47:02,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-01-27 19:47:02,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:47:02,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:47:02,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:47:02,435 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 767 flow. Second operand 3 states and 184 transitions. [2023-01-27 19:47:02,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 45 transitions, 638 flow [2023-01-27 19:47:02,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 330 flow, removed 144 selfloop flow, removed 19 redundant places. [2023-01-27 19:47:02,440 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 242 flow [2023-01-27 19:47:02,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-01-27 19:47:02,442 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 30 predicate places. [2023-01-27 19:47:02,442 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 242 flow [2023-01-27 19:47:02,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:47:02,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:47:02,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:47:02,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:47:02,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:47:02,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:47:02,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:47:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -570227179, now seen corresponding path program 4 times [2023-01-27 19:47:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:47:02,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98107162] [2023-01-27 19:47:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:47:02,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:47:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:47:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:47:03,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:47:03,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98107162] [2023-01-27 19:47:03,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98107162] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:47:03,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555808646] [2023-01-27 19:47:03,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:47:03,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:47:03,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:47:03,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:47:03,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 19:47:03,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:47:03,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:47:03,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 19:47:03,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:47:25,823 WARN L222 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 5 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 19:47:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:47:25,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:48:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:48:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555808646] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:48:33,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:48:33,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 15 [2023-01-27 19:48:33,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094205723] [2023-01-27 19:48:33,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:48:33,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 19:48:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:48:33,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 19:48:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=175, Unknown=4, NotChecked=0, Total=240 [2023-01-27 19:48:33,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:48:33,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 242 flow. Second operand has 16 states, 16 states have (on average 56.375) internal successors, (902), 16 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:48:33,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:48:33,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:48:33,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:48:37,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:39,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:41,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:47,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:50,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:52,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:54,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:56,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:48:58,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:04,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:06,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:08,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:11,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:14,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:17,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:19,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:28,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:30,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:32,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:34,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:43,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:49:46,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:50:26,123 WARN L222 SmtUtils]: Spent 29.83s on a formula simplification. DAG size of input: 131 DAG size of output: 116 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 19:50:34,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:50:36,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:50:39,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:50:41,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:50:48,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:50:50,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:51:14,222 WARN L222 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 114 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 19:51:17,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:51:18,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:51:20,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:51:23,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:51:24,177 INFO L130 PetriNetUnfolder]: 175/363 cut-off events. [2023-01-27 19:51:24,177 INFO L131 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2023-01-27 19:51:24,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1244 conditions, 363 events. 175/363 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1557 event pairs, 14 based on Foata normal form. 14/371 useless extension candidates. Maximal degree in co-relation 1226. Up to 101 conditions per place. [2023-01-27 19:51:24,179 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 90 selfloop transitions, 43 changer transitions 17/150 dead transitions. [2023-01-27 19:51:24,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 150 transitions, 970 flow [2023-01-27 19:51:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 19:51:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 19:51:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1535 transitions. [2023-01-27 19:51:24,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41576381365113757 [2023-01-27 19:51:24,183 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1535 transitions. [2023-01-27 19:51:24,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1535 transitions. [2023-01-27 19:51:24,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:51:24,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1535 transitions. [2023-01-27 19:51:24,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 59.03846153846154) internal successors, (1535), 26 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:51:24,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 142.0) internal successors, (3834), 27 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:51:24,191 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 142.0) internal successors, (3834), 27 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:51:24,191 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 242 flow. Second operand 26 states and 1535 transitions. [2023-01-27 19:51:24,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 150 transitions, 970 flow [2023-01-27 19:51:24,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 150 transitions, 939 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-27 19:51:24,196 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 468 flow [2023-01-27 19:51:24,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=468, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-01-27 19:51:24,196 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 58 predicate places. [2023-01-27 19:51:24,197 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 468 flow [2023-01-27 19:51:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.375) internal successors, (902), 16 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:51:24,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:51:24,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:51:24,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 19:51:24,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:51:24,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:51:24,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:51:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1425533833, now seen corresponding path program 5 times [2023-01-27 19:51:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:51:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971471384] [2023-01-27 19:51:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:51:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:51:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:51:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:51:24,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:51:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971471384] [2023-01-27 19:51:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971471384] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:51:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715911025] [2023-01-27 19:51:24,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:51:24,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:51:24,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:51:24,497 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) [2023-01-27 19:51:24,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 19:55:37,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 19:55:37,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:55:37,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 19:55:37,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:55:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:55:44,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:56:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:56:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715911025] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:56:37,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:56:37,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 14 [2023-01-27 19:56:37,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467994609] [2023-01-27 19:56:37,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:56:37,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 19:56:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:56:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 19:56:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=10, NotChecked=0, Total=210 [2023-01-27 19:56:37,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 142 [2023-01-27 19:56:37,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 468 flow. Second operand has 15 states, 15 states have (on average 56.46666666666667) internal successors, (847), 15 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:56:37,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:56:37,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 142 [2023-01-27 19:56:37,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:56:41,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:56:52,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:56:54,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:56:55,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:57:07,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:57:08,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:57:10,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:57:50,546 WARN L222 SmtUtils]: Spent 33.52s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 19:57:52,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:57:54,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:57:56,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:00,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:02,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:03,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:05,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:07,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:09,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:11,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:27,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:29,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:31,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:33,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:36,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:38,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:40,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:42,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:44,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:46,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:48,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:50,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:58:56,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-01-27 19:59:00,463 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:59:00,463 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:59:00,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 19:59:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 19:59:00,890 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 19:59:00,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:01,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:01,091 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 54/142 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 274 conditions, 65 events (31/64 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 257 event pairs, 0 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 251. Up to 20 conditions per place.). [2023-01-27 19:59:01,092 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 19:59:01,092 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 19:59:01,093 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1] [2023-01-27 19:59:01,095 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:59:01,095 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:59:01,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:59:01 BasicIcfg [2023-01-27 19:59:01,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:59:01,097 INFO L158 Benchmark]: Toolchain (without parser) took 880316.02ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 514.5MB in the beginning and 371.7MB in the end (delta: 142.8MB). Peak memory consumption was 258.5MB. Max. memory is 16.0GB. [2023-01-27 19:59:01,097 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 306.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:59:01,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.66ms. Allocated memory is still 557.8MB. Free memory was 514.0MB in the beginning and 503.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 19:59:01,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.11ms. Allocated memory is still 557.8MB. Free memory was 503.5MB in the beginning and 502.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:59:01,097 INFO L158 Benchmark]: Boogie Preprocessor took 16.03ms. Allocated memory is still 557.8MB. Free memory was 502.1MB in the beginning and 500.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:59:01,097 INFO L158 Benchmark]: RCFGBuilder took 253.92ms. Allocated memory is still 557.8MB. Free memory was 500.9MB in the beginning and 488.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 19:59:01,098 INFO L158 Benchmark]: TraceAbstraction took 879876.25ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 487.4MB in the beginning and 371.7MB in the end (delta: 115.7MB). Peak memory consumption was 231.3MB. Max. memory is 16.0GB. [2023-01-27 19:59:01,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 306.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 134.66ms. Allocated memory is still 557.8MB. Free memory was 514.0MB in the beginning and 503.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.11ms. Allocated memory is still 557.8MB. Free memory was 503.5MB in the beginning and 502.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 16.03ms. Allocated memory is still 557.8MB. Free memory was 502.1MB in the beginning and 500.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 253.92ms. Allocated memory is still 557.8MB. Free memory was 500.9MB in the beginning and 488.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 879876.25ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 487.4MB in the beginning and 371.7MB in the end (delta: 115.7MB). Peak memory consumption was 231.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 68 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 13 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 65 TotalNumberOfCompositions, 297 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 297, independent: 297, independent conditional: 0, independent unconditional: 297, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 140, independent: 140, independent conditional: 0, independent unconditional: 140, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 297, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 140, unknown conditional: 0, unknown unconditional: 140] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 54/142 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 274 conditions, 65 events (31/64 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 257 event pairs, 0 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 251. Up to 20 conditions per place.). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 54/142 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 274 conditions, 65 events (31/64 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 257 event pairs, 0 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 251. Up to 20 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (15states, 54/142 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 274 conditions, 65 events (31/64 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 257 event pairs, 0 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 251. Up to 20 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 879.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 446.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 72 mSolverCounterUnknown, 366 SdHoareTripleChecker+Valid, 212.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 366 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 211.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1589 IncrementalHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 0 mSDtfsCounter, 1589 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 99 SyntacticMatches, 11 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 298.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=767occurred in iteration=7, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 256.5s SatisfiabilityAnalysisTime, 173.2s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 7156 SizeOfPredicates, 21 NumberOfNonLiveVariables, 660 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 15/50 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