/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:23:44,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:23:44,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:23:44,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 05:23:44,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:23:44,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:23:44,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:23:44,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:23:44,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:23:44,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:23:44,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:23:44,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:23:44,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:23:44,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:23:44,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:23:44,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:23:44,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 05:23:44,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:23:44,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:23:44,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:23:44,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:23:44,922 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:23:44,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:23:44,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:23:44,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:23:44,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:23:44,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:23:44,924 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:23:44,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:23:44,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:23:44,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:23:44,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:23:44,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:23:44,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:23:44,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:23:44,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:23:44,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:23:44,927 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:23:45,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:23:45,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:23:45,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:23:45,105 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:23:45,105 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:23:45,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-01-28 05:23:46,128 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:23:46,277 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:23:46,277 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-01-28 05:23:46,283 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52e5e22c/c89649ec3bb54a9d99fc82a58262550a/FLAG23a681dc7 [2023-01-28 05:23:46,298 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52e5e22c/c89649ec3bb54a9d99fc82a58262550a [2023-01-28 05:23:46,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:23:46,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:23:46,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:23:46,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:23:46,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:23:46,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679caacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46, skipping insertion in model container [2023-01-28 05:23:46,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:23:46,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:23:46,486 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-01-28 05:23:46,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:23:46,505 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:23:46,524 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-01-28 05:23:46,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:23:46,531 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:23:46,531 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:23:46,536 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:23:46,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46 WrapperNode [2023-01-28 05:23:46,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:23:46,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:23:46,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:23:46,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:23:46,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,559 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 124 [2023-01-28 05:23:46,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:23:46,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:23:46,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:23:46,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:23:46,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:23:46,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:23:46,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:23:46,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:23:46,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (1/1) ... [2023-01-28 05:23:46,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:23:46,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:46,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 05:23:46,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 05:23:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:23:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:23:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:23:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:23:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:23:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 05:23:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:23:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:23:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:23:46,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:23:46,704 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:23:46,706 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:23:46,927 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:23:46,965 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:23:46,965 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-28 05:23:46,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:23:46 BoogieIcfgContainer [2023-01-28 05:23:46,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:23:46,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:23:46,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:23:46,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:23:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:23:46" (1/3) ... [2023-01-28 05:23:46,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4795c9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:23:46, skipping insertion in model container [2023-01-28 05:23:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:23:46" (2/3) ... [2023-01-28 05:23:46,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4795c9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:23:46, skipping insertion in model container [2023-01-28 05:23:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:23:46" (3/3) ... [2023-01-28 05:23:46,973 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-01-28 05:23:46,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:23:46,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:23:46,984 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:23:47,053 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 05:23:47,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 372 flow [2023-01-28 05:23:47,136 INFO L130 PetriNetUnfolder]: 16/171 cut-off events. [2023-01-28 05:23:47,137 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:23:47,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 16/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-01-28 05:23:47,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 372 flow [2023-01-28 05:23:47,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 161 transitions, 340 flow [2023-01-28 05:23:47,147 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:23:47,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 161 transitions, 340 flow [2023-01-28 05:23:47,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 161 transitions, 340 flow [2023-01-28 05:23:47,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 161 transitions, 340 flow [2023-01-28 05:23:47,233 INFO L130 PetriNetUnfolder]: 16/161 cut-off events. [2023-01-28 05:23:47,233 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:23:47,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 161 events. 16/161 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-01-28 05:23:47,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 1720 [2023-01-28 05:23:51,200 INFO L134 LiptonReduction]: Checked pairs total: 2460 [2023-01-28 05:23:51,200 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-01-28 05:23:51,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:23:51,214 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;@3705342c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:23:51,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 05:23:51,218 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2023-01-28 05:23:51,218 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:23:51,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:51,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:51,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:51,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash 290379782, now seen corresponding path program 1 times [2023-01-28 05:23:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:51,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433150817] [2023-01-28 05:23:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433150817] [2023-01-28 05:23:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433150817] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:23:51,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:23:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:23:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750038996] [2023-01-28 05:23:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:51,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:23:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:23:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:23:51,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 328 [2023-01-28 05:23:51,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:51,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:51,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 328 [2023-01-28 05:23:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:52,030 INFO L130 PetriNetUnfolder]: 853/1153 cut-off events. [2023-01-28 05:23:52,030 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-01-28 05:23:52,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1153 events. 853/1153 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4189 event pairs, 310 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 1073. Up to 740 conditions per place. [2023-01-28 05:23:52,041 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 44 selfloop transitions, 5 changer transitions 1/53 dead transitions. [2023-01-28 05:23:52,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 242 flow [2023-01-28 05:23:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:23:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:23:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 527 transitions. [2023-01-28 05:23:52,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4016768292682927 [2023-01-28 05:23:52,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 527 transitions. [2023-01-28 05:23:52,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 527 transitions. [2023-01-28 05:23:52,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:52,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 527 transitions. [2023-01-28 05:23:52,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,068 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 527 transitions. [2023-01-28 05:23:52,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 242 flow [2023-01-28 05:23:52,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 05:23:52,073 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 98 flow [2023-01-28 05:23:52,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-01-28 05:23:52,076 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-01-28 05:23:52,077 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 98 flow [2023-01-28 05:23:52,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:52,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:52,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:23:52,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:52,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 26416036, now seen corresponding path program 1 times [2023-01-28 05:23:52,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151388833] [2023-01-28 05:23:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:52,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:52,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151388833] [2023-01-28 05:23:52,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151388833] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:52,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645727252] [2023-01-28 05:23:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:52,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:52,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:52,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:52,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:23:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:52,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:23:52,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:52,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645727252] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:23:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-01-28 05:23:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904761364] [2023-01-28 05:23:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:23:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:23:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-01-28 05:23:52,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 328 [2023-01-28 05:23:52,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:52,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 328 [2023-01-28 05:23:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:52,665 INFO L130 PetriNetUnfolder]: 1545/2124 cut-off events. [2023-01-28 05:23:52,665 INFO L131 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2023-01-28 05:23:52,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 2124 events. 1545/2124 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9164 event pairs, 757 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 4470. Up to 1045 conditions per place. [2023-01-28 05:23:52,674 INFO L137 encePairwiseOnDemand]: 323/328 looper letters, 51 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-01-28 05:23:52,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 280 flow [2023-01-28 05:23:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:23:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:23:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 663 transitions. [2023-01-28 05:23:52,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40426829268292686 [2023-01-28 05:23:52,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 663 transitions. [2023-01-28 05:23:52,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 663 transitions. [2023-01-28 05:23:52,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:52,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 663 transitions. [2023-01-28 05:23:52,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,685 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 98 flow. Second operand 5 states and 663 transitions. [2023-01-28 05:23:52,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 280 flow [2023-01-28 05:23:52,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 272 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:23:52,687 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 112 flow [2023-01-28 05:23:52,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-01-28 05:23:52,688 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-01-28 05:23:52,688 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 112 flow [2023-01-28 05:23:52,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:52,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:52,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:52,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 05:23:52,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:52,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:52,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 232148464, now seen corresponding path program 1 times [2023-01-28 05:23:52,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238515944] [2023-01-28 05:23:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:52,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238515944] [2023-01-28 05:23:52,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238515944] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:23:52,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:23:52,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:23:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107690985] [2023-01-28 05:23:53,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:53,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:23:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:23:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:23:53,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:53,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:53,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:53,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:53,175 INFO L130 PetriNetUnfolder]: 1172/1618 cut-off events. [2023-01-28 05:23:53,175 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2023-01-28 05:23:53,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1618 events. 1172/1618 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6354 event pairs, 521 based on Foata normal form. 67/1175 useless extension candidates. Maximal degree in co-relation 2060. Up to 793 conditions per place. [2023-01-28 05:23:53,181 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 60 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-01-28 05:23:53,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 324 flow [2023-01-28 05:23:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:23:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:23:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 656 transitions. [2023-01-28 05:23:53,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-01-28 05:23:53,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 656 transitions. [2023-01-28 05:23:53,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 656 transitions. [2023-01-28 05:23:53,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:53,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 656 transitions. [2023-01-28 05:23:53,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,188 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,188 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 112 flow. Second operand 5 states and 656 transitions. [2023-01-28 05:23:53,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 324 flow [2023-01-28 05:23:53,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 319 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 05:23:53,190 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 120 flow [2023-01-28 05:23:53,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-01-28 05:23:53,190 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-01-28 05:23:53,190 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 120 flow [2023-01-28 05:23:53,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:53,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:23:53,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:53,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1046469637, now seen corresponding path program 1 times [2023-01-28 05:23:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:53,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473110042] [2023-01-28 05:23:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:23:53,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:53,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473110042] [2023-01-28 05:23:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473110042] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:53,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962738886] [2023-01-28 05:23:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:53,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:53,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:53,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:53,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:23:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:53,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:23:53,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:23:53,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:23:53,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962738886] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:53,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:23:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 05:23:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880592283] [2023-01-28 05:23:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:53,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:23:53,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:23:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 05:23:53,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:53,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:53,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:53,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:53,671 INFO L130 PetriNetUnfolder]: 1052/1471 cut-off events. [2023-01-28 05:23:53,671 INFO L131 PetriNetUnfolder]: For 418/442 co-relation queries the response was YES. [2023-01-28 05:23:53,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 1471 events. 1052/1471 cut-off events. For 418/442 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6024 event pairs, 377 based on Foata normal form. 24/1116 useless extension candidates. Maximal degree in co-relation 1868. Up to 498 conditions per place. [2023-01-28 05:23:53,678 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 69 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2023-01-28 05:23:53,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 79 transitions, 388 flow [2023-01-28 05:23:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:23:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:23:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 782 transitions. [2023-01-28 05:23:53,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39735772357723576 [2023-01-28 05:23:53,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 782 transitions. [2023-01-28 05:23:53,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 782 transitions. [2023-01-28 05:23:53,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:53,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 782 transitions. [2023-01-28 05:23:53,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,687 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,688 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 120 flow. Second operand 6 states and 782 transitions. [2023-01-28 05:23:53,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 79 transitions, 388 flow [2023-01-28 05:23:53,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 05:23:53,690 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 146 flow [2023-01-28 05:23:53,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-01-28 05:23:53,691 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-01-28 05:23:53,691 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 146 flow [2023-01-28 05:23:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:53,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:53,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:53,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:23:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 05:23:53,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:53,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash -709973367, now seen corresponding path program 1 times [2023-01-28 05:23:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:53,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069519035] [2023-01-28 05:23:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:53,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:53,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069519035] [2023-01-28 05:23:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069519035] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:23:53,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:23:53,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:23:53,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155593172] [2023-01-28 05:23:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:23:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:23:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:23:54,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:54,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:54,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:54,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:54,126 INFO L130 PetriNetUnfolder]: 611/889 cut-off events. [2023-01-28 05:23:54,126 INFO L131 PetriNetUnfolder]: For 634/704 co-relation queries the response was YES. [2023-01-28 05:23:54,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 889 events. 611/889 cut-off events. For 634/704 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3455 event pairs, 290 based on Foata normal form. 70/891 useless extension candidates. Maximal degree in co-relation 1681. Up to 614 conditions per place. [2023-01-28 05:23:54,130 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 26 selfloop transitions, 4 changer transitions 30/62 dead transitions. [2023-01-28 05:23:54,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 326 flow [2023-01-28 05:23:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:23:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:23:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2023-01-28 05:23:54,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3957317073170732 [2023-01-28 05:23:54,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2023-01-28 05:23:54,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2023-01-28 05:23:54,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:54,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2023-01-28 05:23:54,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,138 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 146 flow. Second operand 5 states and 649 transitions. [2023-01-28 05:23:54,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 326 flow [2023-01-28 05:23:54,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 322 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 05:23:54,141 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 127 flow [2023-01-28 05:23:54,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-01-28 05:23:54,141 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-01-28 05:23:54,141 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 127 flow [2023-01-28 05:23:54,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:54,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:54,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:23:54,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:54,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash 877946428, now seen corresponding path program 1 times [2023-01-28 05:23:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:54,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767121319] [2023-01-28 05:23:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:54,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:54,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:54,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767121319] [2023-01-28 05:23:54,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767121319] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:54,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666971111] [2023-01-28 05:23:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:54,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:54,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:54,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:23:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:54,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:23:54,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:54,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666971111] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:54,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:23:54,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 05:23:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691495135] [2023-01-28 05:23:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:23:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:23:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 05:23:54,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:54,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:54,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:54,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:54,477 INFO L130 PetriNetUnfolder]: 563/780 cut-off events. [2023-01-28 05:23:54,477 INFO L131 PetriNetUnfolder]: For 486/568 co-relation queries the response was YES. [2023-01-28 05:23:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 780 events. 563/780 cut-off events. For 486/568 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2694 event pairs, 237 based on Foata normal form. 124/807 useless extension candidates. Maximal degree in co-relation 2179. Up to 609 conditions per place. [2023-01-28 05:23:54,480 INFO L137 encePairwiseOnDemand]: 323/328 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-01-28 05:23:54,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 265 flow [2023-01-28 05:23:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:23:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:23:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2023-01-28 05:23:54,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853658536585366 [2023-01-28 05:23:54,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2023-01-28 05:23:54,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2023-01-28 05:23:54,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:54,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2023-01-28 05:23:54,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,485 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 127 flow. Second operand 5 states and 632 transitions. [2023-01-28 05:23:54,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 265 flow [2023-01-28 05:23:54,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 235 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-28 05:23:54,487 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 121 flow [2023-01-28 05:23:54,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-01-28 05:23:54,488 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-01-28 05:23:54,488 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 121 flow [2023-01-28 05:23:54,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:54,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:54,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:23:54,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:54,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:54,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash -510812246, now seen corresponding path program 1 times [2023-01-28 05:23:54,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:54,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659424341] [2023-01-28 05:23:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:54,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:54,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659424341] [2023-01-28 05:23:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659424341] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:54,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107617337] [2023-01-28 05:23:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:54,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:54,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:54,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:54,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:23:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:54,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:23:54,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:54,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107617337] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:54,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:23:54,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 05:23:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764386678] [2023-01-28 05:23:54,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:54,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:23:54,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:23:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 05:23:54,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:54,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:54,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:54,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:54,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:55,057 INFO L130 PetriNetUnfolder]: 515/725 cut-off events. [2023-01-28 05:23:55,057 INFO L131 PetriNetUnfolder]: For 631/815 co-relation queries the response was YES. [2023-01-28 05:23:55,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 725 events. 515/725 cut-off events. For 631/815 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2316 event pairs, 191 based on Foata normal form. 184/806 useless extension candidates. Maximal degree in co-relation 2025. Up to 395 conditions per place. [2023-01-28 05:23:55,060 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 39 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-01-28 05:23:55,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 262 flow [2023-01-28 05:23:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:23:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:23:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-01-28 05:23:55,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3847560975609756 [2023-01-28 05:23:55,061 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-01-28 05:23:55,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-01-28 05:23:55,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:55,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-01-28 05:23:55,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,065 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 121 flow. Second operand 5 states and 631 transitions. [2023-01-28 05:23:55,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 262 flow [2023-01-28 05:23:55,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 251 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 05:23:55,066 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 144 flow [2023-01-28 05:23:55,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-01-28 05:23:55,066 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-01-28 05:23:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 144 flow [2023-01-28 05:23:55,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:55,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:55,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:23:55,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:55,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:55,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -990804847, now seen corresponding path program 1 times [2023-01-28 05:23:55,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:55,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892695051] [2023-01-28 05:23:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:23:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892695051] [2023-01-28 05:23:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892695051] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:23:55,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:23:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 05:23:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972653831] [2023-01-28 05:23:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:23:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:23:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:23:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:23:55,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 328 [2023-01-28 05:23:55,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:55,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 328 [2023-01-28 05:23:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:55,629 INFO L130 PetriNetUnfolder]: 1096/1546 cut-off events. [2023-01-28 05:23:55,629 INFO L131 PetriNetUnfolder]: For 1643/1861 co-relation queries the response was YES. [2023-01-28 05:23:55,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 1546 events. 1096/1546 cut-off events. For 1643/1861 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5671 event pairs, 121 based on Foata normal form. 294/1662 useless extension candidates. Maximal degree in co-relation 4774. Up to 530 conditions per place. [2023-01-28 05:23:55,636 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 89 selfloop transitions, 17 changer transitions 13/120 dead transitions. [2023-01-28 05:23:55,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 700 flow [2023-01-28 05:23:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 05:23:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 05:23:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1370 transitions. [2023-01-28 05:23:55,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640921409214092 [2023-01-28 05:23:55,640 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1370 transitions. [2023-01-28 05:23:55,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1370 transitions. [2023-01-28 05:23:55,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:55,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1370 transitions. [2023-01-28 05:23:55,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.22222222222223) internal successors, (1370), 9 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,646 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,646 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 144 flow. Second operand 9 states and 1370 transitions. [2023-01-28 05:23:55,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 700 flow [2023-01-28 05:23:55,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 120 transitions, 691 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 05:23:55,651 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 292 flow [2023-01-28 05:23:55,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-01-28 05:23:55,653 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-01-28 05:23:55,653 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 292 flow [2023-01-28 05:23:55,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.5) internal successors, (867), 6 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:55,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:55,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:23:55,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:55,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash -849126380, now seen corresponding path program 2 times [2023-01-28 05:23:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008426875] [2023-01-28 05:23:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:55,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:23:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008426875] [2023-01-28 05:23:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008426875] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291273482] [2023-01-28 05:23:55,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:23:55,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:55,769 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) [2023-01-28 05:23:55,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:23:55,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:23:55,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:23:55,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:23:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:23:55,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:23:55,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291273482] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:23:55,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:23:55,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 05:23:55,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030390730] [2023-01-28 05:23:55,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:23:55,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:23:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:23:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:23:55,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:55,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 292 flow. Second operand has 14 states, 14 states have (on average 121.14285714285714) internal successors, (1696), 14 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:55,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:55,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:55,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:56,254 INFO L130 PetriNetUnfolder]: 1332/1958 cut-off events. [2023-01-28 05:23:56,254 INFO L131 PetriNetUnfolder]: For 5356/5834 co-relation queries the response was YES. [2023-01-28 05:23:56,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 1958 events. 1332/1958 cut-off events. For 5356/5834 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8155 event pairs, 468 based on Foata normal form. 492/2442 useless extension candidates. Maximal degree in co-relation 5385. Up to 1028 conditions per place. [2023-01-28 05:23:56,264 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 57 selfloop transitions, 7 changer transitions 52/120 dead transitions. [2023-01-28 05:23:56,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 888 flow [2023-01-28 05:23:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 05:23:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 05:23:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1146 transitions. [2023-01-28 05:23:56,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882113821138211 [2023-01-28 05:23:56,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1146 transitions. [2023-01-28 05:23:56,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1146 transitions. [2023-01-28 05:23:56,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:56,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1146 transitions. [2023-01-28 05:23:56,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.33333333333333) internal successors, (1146), 9 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:56,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:56,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:56,277 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 292 flow. Second operand 9 states and 1146 transitions. [2023-01-28 05:23:56,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 888 flow [2023-01-28 05:23:56,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 864 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-01-28 05:23:56,291 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 330 flow [2023-01-28 05:23:56,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-01-28 05:23:56,292 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-01-28 05:23:56,292 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 330 flow [2023-01-28 05:23:56,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 121.14285714285714) internal successors, (1696), 14 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:56,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:56,293 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:56,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 05:23:56,498 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 [2023-01-28 05:23:56,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:56,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash 123513301, now seen corresponding path program 3 times [2023-01-28 05:23:56,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:56,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111056096] [2023-01-28 05:23:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:56,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:23:56,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111056096] [2023-01-28 05:23:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111056096] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478044183] [2023-01-28 05:23:56,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:23:56,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:56,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:56,650 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) [2023-01-28 05:23:56,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:23:56,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:23:56,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:23:56,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:23:56,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:23:56,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:23:56,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478044183] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:23:56,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:23:56,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-01-28 05:23:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705408439] [2023-01-28 05:23:56,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:23:56,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:23:56,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:23:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:23:56,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:23:56,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 330 flow. Second operand has 15 states, 15 states have (on average 120.73333333333333) internal successors, (1811), 15 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:56,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:56,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:23:56,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:57,145 INFO L130 PetriNetUnfolder]: 1403/2019 cut-off events. [2023-01-28 05:23:57,145 INFO L131 PetriNetUnfolder]: For 5477/5691 co-relation queries the response was YES. [2023-01-28 05:23:57,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7910 conditions, 2019 events. 1403/2019 cut-off events. For 5477/5691 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7974 event pairs, 432 based on Foata normal form. 302/2309 useless extension candidates. Maximal degree in co-relation 7864. Up to 1316 conditions per place. [2023-01-28 05:23:57,154 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 91 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2023-01-28 05:23:57,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 884 flow [2023-01-28 05:23:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 05:23:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 05:23:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1001 transitions. [2023-01-28 05:23:57,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38147865853658536 [2023-01-28 05:23:57,156 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1001 transitions. [2023-01-28 05:23:57,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1001 transitions. [2023-01-28 05:23:57,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:57,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1001 transitions. [2023-01-28 05:23:57,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.125) internal successors, (1001), 8 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:57,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 328.0) internal successors, (2952), 9 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:57,161 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 328.0) internal successors, (2952), 9 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:57,161 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 330 flow. Second operand 8 states and 1001 transitions. [2023-01-28 05:23:57,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 884 flow [2023-01-28 05:23:57,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 846 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-01-28 05:23:57,168 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 336 flow [2023-01-28 05:23:57,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-01-28 05:23:57,170 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-01-28 05:23:57,170 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 336 flow [2023-01-28 05:23:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 120.73333333333333) internal successors, (1811), 15 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:57,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:57,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:57,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 05:23:57,375 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 [2023-01-28 05:23:57,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:57,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -18919933, now seen corresponding path program 4 times [2023-01-28 05:23:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299152274] [2023-01-28 05:23:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:57,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:23:57,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:57,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299152274] [2023-01-28 05:23:57,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299152274] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:57,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529353789] [2023-01-28 05:23:57,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:23:57,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:57,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:57,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 05:23:57,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:23:57,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:23:57,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:23:57,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 05:23:57,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 05:23:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529353789] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:23:57,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:23:57,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 05:23:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825158066] [2023-01-28 05:23:57,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:23:57,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 05:23:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 05:23:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 05:23:57,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 328 [2023-01-28 05:23:57,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 118.3076923076923) internal successors, (1538), 13 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:57,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:57,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 328 [2023-01-28 05:23:57,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:58,241 INFO L130 PetriNetUnfolder]: 2106/2946 cut-off events. [2023-01-28 05:23:58,241 INFO L131 PetriNetUnfolder]: For 8707/8747 co-relation queries the response was YES. [2023-01-28 05:23:58,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12356 conditions, 2946 events. 2106/2946 cut-off events. For 8707/8747 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11180 event pairs, 61 based on Foata normal form. 78/3024 useless extension candidates. Maximal degree in co-relation 12310. Up to 950 conditions per place. [2023-01-28 05:23:58,261 INFO L137 encePairwiseOnDemand]: 317/328 looper letters, 167 selfloop transitions, 37 changer transitions 0/207 dead transitions. [2023-01-28 05:23:58,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 207 transitions, 1724 flow [2023-01-28 05:23:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 05:23:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 05:23:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2083 transitions. [2023-01-28 05:23:58,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37356527977044474 [2023-01-28 05:23:58,265 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2083 transitions. [2023-01-28 05:23:58,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2083 transitions. [2023-01-28 05:23:58,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:58,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2083 transitions. [2023-01-28 05:23:58,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 122.52941176470588) internal successors, (2083), 17 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:58,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:58,275 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:58,275 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 336 flow. Second operand 17 states and 2083 transitions. [2023-01-28 05:23:58,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 207 transitions, 1724 flow [2023-01-28 05:23:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 207 transitions, 1693 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 05:23:58,289 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 678 flow [2023-01-28 05:23:58,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=678, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-01-28 05:23:58,290 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2023-01-28 05:23:58,290 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 678 flow [2023-01-28 05:23:58,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 118.3076923076923) internal successors, (1538), 13 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:58,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:58,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:58,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 05:23:58,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:58,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:58,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash -625333260, now seen corresponding path program 5 times [2023-01-28 05:23:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:58,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308533524] [2023-01-28 05:23:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:58,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:23:58,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308533524] [2023-01-28 05:23:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308533524] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190315116] [2023-01-28 05:23:58,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 05:23:58,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:58,659 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:58,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 05:23:58,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 05:23:58,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:23:58,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:23:58,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:23:58,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:23:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190315116] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:23:58,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:23:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-01-28 05:23:58,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936108665] [2023-01-28 05:23:58,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:23:58,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 05:23:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:58,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 05:23:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-01-28 05:23:58,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 328 [2023-01-28 05:23:58,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 678 flow. Second operand has 15 states, 15 states have (on average 143.13333333333333) internal successors, (2147), 15 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:58,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:58,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 328 [2023-01-28 05:23:58,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:59,757 INFO L130 PetriNetUnfolder]: 4224/6102 cut-off events. [2023-01-28 05:23:59,757 INFO L131 PetriNetUnfolder]: For 24215/24301 co-relation queries the response was YES. [2023-01-28 05:23:59,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26553 conditions, 6102 events. 4224/6102 cut-off events. For 24215/24301 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 28704 event pairs, 548 based on Foata normal form. 390/6492 useless extension candidates. Maximal degree in co-relation 26499. Up to 1525 conditions per place. [2023-01-28 05:23:59,789 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 232 selfloop transitions, 54 changer transitions 24/314 dead transitions. [2023-01-28 05:23:59,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 314 transitions, 2629 flow [2023-01-28 05:23:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 05:23:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 05:23:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2887 transitions. [2023-01-28 05:23:59,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46325417201540436 [2023-01-28 05:23:59,794 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2887 transitions. [2023-01-28 05:23:59,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2887 transitions. [2023-01-28 05:23:59,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:23:59,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2887 transitions. [2023-01-28 05:23:59,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 151.94736842105263) internal successors, (2887), 19 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:59,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 328.0) internal successors, (6560), 20 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:59,815 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 328.0) internal successors, (6560), 20 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:59,815 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 678 flow. Second operand 19 states and 2887 transitions. [2023-01-28 05:23:59,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 314 transitions, 2629 flow [2023-01-28 05:23:59,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 314 transitions, 2472 flow, removed 47 selfloop flow, removed 6 redundant places. [2023-01-28 05:23:59,874 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1185 flow [2023-01-28 05:23:59,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1185, PETRI_PLACES=106, PETRI_TRANSITIONS=116} [2023-01-28 05:23:59,875 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2023-01-28 05:23:59,875 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1185 flow [2023-01-28 05:23:59,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 143.13333333333333) internal successors, (2147), 15 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:59,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:59,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:59,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:00,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 05:24:00,081 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:00,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1824849498, now seen corresponding path program 6 times [2023-01-28 05:24:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:00,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862306542] [2023-01-28 05:24:00,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:24:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862306542] [2023-01-28 05:24:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862306542] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795605375] [2023-01-28 05:24:00,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:24:00,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:00,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:00,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:00,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 05:24:00,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 05:24:00,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:00,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:24:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:24:00,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:24:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795605375] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:00,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-01-28 05:24:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731489974] [2023-01-28 05:24:00,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:24:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:24:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:24:00,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 328 [2023-01-28 05:24:00,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 116 transitions, 1185 flow. Second operand has 14 states, 14 states have (on average 143.14285714285714) internal successors, (2004), 14 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:00,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:00,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 328 [2023-01-28 05:24:00,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:01,813 INFO L130 PetriNetUnfolder]: 5322/7712 cut-off events. [2023-01-28 05:24:01,814 INFO L131 PetriNetUnfolder]: For 37213/37321 co-relation queries the response was YES. [2023-01-28 05:24:01,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37890 conditions, 7712 events. 5322/7712 cut-off events. For 37213/37321 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37613 event pairs, 319 based on Foata normal form. 184/7895 useless extension candidates. Maximal degree in co-relation 37831. Up to 1943 conditions per place. [2023-01-28 05:24:01,865 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 208 selfloop transitions, 77 changer transitions 24/313 dead transitions. [2023-01-28 05:24:01,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 313 transitions, 2910 flow [2023-01-28 05:24:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 05:24:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 05:24:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2584 transitions. [2023-01-28 05:24:01,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2023-01-28 05:24:01,869 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2584 transitions. [2023-01-28 05:24:01,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2584 transitions. [2023-01-28 05:24:01,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:01,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2584 transitions. [2023-01-28 05:24:01,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 152.0) internal successors, (2584), 17 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:01,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:01,878 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:01,878 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1185 flow. Second operand 17 states and 2584 transitions. [2023-01-28 05:24:01,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 313 transitions, 2910 flow [2023-01-28 05:24:02,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 313 transitions, 2831 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-01-28 05:24:02,053 INFO L231 Difference]: Finished difference. Result has 127 places, 138 transitions, 1647 flow [2023-01-28 05:24:02,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1647, PETRI_PLACES=127, PETRI_TRANSITIONS=138} [2023-01-28 05:24:02,053 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2023-01-28 05:24:02,053 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 138 transitions, 1647 flow [2023-01-28 05:24:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 143.14285714285714) internal successors, (2004), 14 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:02,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:02,054 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:02,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 05:24:02,259 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:02,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1957586289, now seen corresponding path program 7 times [2023-01-28 05:24:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:02,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010085553] [2023-01-28 05:24:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:24:02,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:02,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010085553] [2023-01-28 05:24:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010085553] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:02,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073724458] [2023-01-28 05:24:02,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 05:24:02,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:02,413 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:02,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 05:24:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:02,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:24:02,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:24:02,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:24:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073724458] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:02,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:02,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 05:24:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599102792] [2023-01-28 05:24:02,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:02,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 05:24:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 05:24:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-01-28 05:24:02,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:24:02,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 1647 flow. Second operand has 19 states, 19 states have (on average 120.84210526315789) internal successors, (2296), 19 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:02,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:02,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:24:02,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:03,997 INFO L130 PetriNetUnfolder]: 7658/11250 cut-off events. [2023-01-28 05:24:03,997 INFO L131 PetriNetUnfolder]: For 75140/75711 co-relation queries the response was YES. [2023-01-28 05:24:04,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57205 conditions, 11250 events. 7658/11250 cut-off events. For 75140/75711 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 62070 event pairs, 2159 based on Foata normal form. 693/11801 useless extension candidates. Maximal degree in co-relation 54064. Up to 5118 conditions per place. [2023-01-28 05:24:04,081 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 163 selfloop transitions, 9 changer transitions 130/321 dead transitions. [2023-01-28 05:24:04,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 321 transitions, 4057 flow [2023-01-28 05:24:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 05:24:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 05:24:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1645 transitions. [2023-01-28 05:24:04,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857879924953096 [2023-01-28 05:24:04,086 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1645 transitions. [2023-01-28 05:24:04,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1645 transitions. [2023-01-28 05:24:04,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:04,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1645 transitions. [2023-01-28 05:24:04,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.53846153846153) internal successors, (1645), 13 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:04,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 328.0) internal successors, (4592), 14 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:04,096 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 328.0) internal successors, (4592), 14 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:04,096 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 1647 flow. Second operand 13 states and 1645 transitions. [2023-01-28 05:24:04,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 321 transitions, 4057 flow [2023-01-28 05:24:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3807 flow, removed 91 selfloop flow, removed 6 redundant places. [2023-01-28 05:24:04,597 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 1608 flow [2023-01-28 05:24:04,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1608, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2023-01-28 05:24:04,598 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 105 predicate places. [2023-01-28 05:24:04,598 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 1608 flow [2023-01-28 05:24:04,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.84210526315789) internal successors, (2296), 19 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:04,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:04,599 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:04,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:04,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 05:24:04,802 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:04,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2013782112, now seen corresponding path program 8 times [2023-01-28 05:24:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:04,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454537487] [2023-01-28 05:24:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-01-28 05:24:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454537487] [2023-01-28 05:24:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454537487] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628411205] [2023-01-28 05:24:05,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:24:05,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:05,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:05,070 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:05,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 05:24:05,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:24:05,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:05,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:24:05,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-01-28 05:24:05,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-01-28 05:24:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628411205] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:05,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 05:24:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714050482] [2023-01-28 05:24:05,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:24:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:05,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:24:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:24:05,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:24:05,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 1608 flow. Second operand has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:05,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:05,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:24:05,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:06,374 INFO L130 PetriNetUnfolder]: 6434/9178 cut-off events. [2023-01-28 05:24:06,375 INFO L131 PetriNetUnfolder]: For 57039/57404 co-relation queries the response was YES. [2023-01-28 05:24:06,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47464 conditions, 9178 events. 6434/9178 cut-off events. For 57039/57404 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45952 event pairs, 1922 based on Foata normal form. 635/9672 useless extension candidates. Maximal degree in co-relation 47382. Up to 5194 conditions per place. [2023-01-28 05:24:06,422 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 276 selfloop transitions, 17 changer transitions 60/371 dead transitions. [2023-01-28 05:24:06,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 371 transitions, 5036 flow [2023-01-28 05:24:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 05:24:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 05:24:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1370 transitions. [2023-01-28 05:24:06,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37971175166297116 [2023-01-28 05:24:06,424 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1370 transitions. [2023-01-28 05:24:06,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1370 transitions. [2023-01-28 05:24:06,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:06,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1370 transitions. [2023-01-28 05:24:06,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.54545454545455) internal successors, (1370), 11 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:06,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 328.0) internal successors, (3936), 12 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:06,429 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 328.0) internal successors, (3936), 12 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:06,429 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 1608 flow. Second operand 11 states and 1370 transitions. [2023-01-28 05:24:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 371 transitions, 5036 flow [2023-01-28 05:24:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 371 transitions, 4894 flow, removed 63 selfloop flow, removed 7 redundant places. [2023-01-28 05:24:06,683 INFO L231 Difference]: Finished difference. Result has 135 places, 126 transitions, 1421 flow [2023-01-28 05:24:06,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=135, PETRI_TRANSITIONS=126} [2023-01-28 05:24:06,683 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2023-01-28 05:24:06,683 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 126 transitions, 1421 flow [2023-01-28 05:24:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:06,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 05:24:06,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 05:24:06,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:06,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:06,890 INFO L85 PathProgramCache]: Analyzing trace with hash -816507476, now seen corresponding path program 9 times [2023-01-28 05:24:06,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645941095] [2023-01-28 05:24:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:24:07,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:07,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645941095] [2023-01-28 05:24:07,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645941095] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:07,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165795495] [2023-01-28 05:24:07,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:24:07,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:07,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:07,029 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:07,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 05:24:07,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 05:24:07,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:07,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:24:07,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:24:07,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:24:07,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165795495] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:07,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:07,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 05:24:07,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714978875] [2023-01-28 05:24:07,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:07,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:24:07,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:07,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:24:07,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:24:07,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:24:07,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 126 transitions, 1421 flow. Second operand has 20 states, 20 states have (on average 120.75) internal successors, (2415), 20 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:07,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:07,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:24:07,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:08,335 INFO L130 PetriNetUnfolder]: 5413/7679 cut-off events. [2023-01-28 05:24:08,335 INFO L131 PetriNetUnfolder]: For 46210/46350 co-relation queries the response was YES. [2023-01-28 05:24:08,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42148 conditions, 7679 events. 5413/7679 cut-off events. For 46210/46350 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 35293 event pairs, 594 based on Foata normal form. 178/7842 useless extension candidates. Maximal degree in co-relation 42070. Up to 4104 conditions per place. [2023-01-28 05:24:08,371 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 148 selfloop transitions, 46 changer transitions 0/201 dead transitions. [2023-01-28 05:24:08,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 201 transitions, 2416 flow [2023-01-28 05:24:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 05:24:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 05:24:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1500 transitions. [2023-01-28 05:24:08,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2023-01-28 05:24:08,373 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1500 transitions. [2023-01-28 05:24:08,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1500 transitions. [2023-01-28 05:24:08,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:08,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1500 transitions. [2023-01-28 05:24:08,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 125.0) internal successors, (1500), 12 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:08,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 328.0) internal successors, (4264), 13 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:08,378 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 328.0) internal successors, (4264), 13 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:08,378 INFO L175 Difference]: Start difference. First operand has 135 places, 126 transitions, 1421 flow. Second operand 12 states and 1500 transitions. [2023-01-28 05:24:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 201 transitions, 2416 flow [2023-01-28 05:24:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 201 transitions, 2264 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-01-28 05:24:08,527 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 1589 flow [2023-01-28 05:24:08,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1589, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2023-01-28 05:24:08,528 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2023-01-28 05:24:08,528 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 1589 flow [2023-01-28 05:24:08,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 120.75) internal successors, (2415), 20 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:08,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:08,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:08,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:08,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 05:24:08,734 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:08,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1011768859, now seen corresponding path program 10 times [2023-01-28 05:24:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:08,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077674325] [2023-01-28 05:24:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:08,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:24:08,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077674325] [2023-01-28 05:24:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077674325] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756937490] [2023-01-28 05:24:08,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:24:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:08,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:08,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:08,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 05:24:09,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:24:09,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:09,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:24:09,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:24:09,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:24:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756937490] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:09,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2023-01-28 05:24:09,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210920972] [2023-01-28 05:24:09,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:09,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 05:24:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 05:24:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-01-28 05:24:09,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 328 [2023-01-28 05:24:09,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 1589 flow. Second operand has 17 states, 17 states have (on average 143.05882352941177) internal successors, (2432), 17 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:09,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:09,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 328 [2023-01-28 05:24:09,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:11,002 INFO L130 PetriNetUnfolder]: 7450/10528 cut-off events. [2023-01-28 05:24:11,002 INFO L131 PetriNetUnfolder]: For 58408/58530 co-relation queries the response was YES. [2023-01-28 05:24:11,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55880 conditions, 10528 events. 7450/10528 cut-off events. For 58408/58530 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 49706 event pairs, 449 based on Foata normal form. 210/10738 useless extension candidates. Maximal degree in co-relation 55803. Up to 2092 conditions per place. [2023-01-28 05:24:11,064 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 342 selfloop transitions, 104 changer transitions 52/502 dead transitions. [2023-01-28 05:24:11,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 502 transitions, 4850 flow [2023-01-28 05:24:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 05:24:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 05:24:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4253 transitions. [2023-01-28 05:24:11,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630879790940767 [2023-01-28 05:24:11,070 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4253 transitions. [2023-01-28 05:24:11,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4253 transitions. [2023-01-28 05:24:11,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:11,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4253 transitions. [2023-01-28 05:24:11,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 151.89285714285714) internal successors, (4253), 28 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:11,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 328.0) internal successors, (9512), 29 states have internal predecessors, (9512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:11,104 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 328.0) internal successors, (9512), 29 states have internal predecessors, (9512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:11,104 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 1589 flow. Second operand 28 states and 4253 transitions. [2023-01-28 05:24:11,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 502 transitions, 4850 flow [2023-01-28 05:24:11,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 502 transitions, 4785 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 05:24:11,345 INFO L231 Difference]: Finished difference. Result has 161 places, 169 transitions, 2319 flow [2023-01-28 05:24:11,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2319, PETRI_PLACES=161, PETRI_TRANSITIONS=169} [2023-01-28 05:24:11,345 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2023-01-28 05:24:11,346 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 169 transitions, 2319 flow [2023-01-28 05:24:11,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 143.05882352941177) internal successors, (2432), 17 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:11,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:11,346 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:11,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:11,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 05:24:11,551 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:11,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1542560206, now seen corresponding path program 11 times [2023-01-28 05:24:11,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:11,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041146937] [2023-01-28 05:24:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:11,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-01-28 05:24:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:11,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041146937] [2023-01-28 05:24:11,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041146937] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:11,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953576271] [2023-01-28 05:24:11,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 05:24:11,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:11,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:11,726 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:11,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 05:24:12,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-01-28 05:24:12,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:12,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 05:24:12,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-01-28 05:24:12,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-01-28 05:24:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953576271] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:12,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:12,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-01-28 05:24:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335008698] [2023-01-28 05:24:12,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 05:24:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:12,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 05:24:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-01-28 05:24:12,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:24:12,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 169 transitions, 2319 flow. Second operand has 24 states, 24 states have (on average 120.54166666666667) internal successors, (2893), 24 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:12,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:12,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:24:12,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:14,367 INFO L130 PetriNetUnfolder]: 11441/16325 cut-off events. [2023-01-28 05:24:14,367 INFO L131 PetriNetUnfolder]: For 131859/132679 co-relation queries the response was YES. [2023-01-28 05:24:14,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92371 conditions, 16325 events. 11441/16325 cut-off events. For 131859/132679 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 87768 event pairs, 2900 based on Foata normal form. 810/16929 useless extension candidates. Maximal degree in co-relation 87325. Up to 6780 conditions per place. [2023-01-28 05:24:14,464 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 205 selfloop transitions, 11 changer transitions 226/464 dead transitions. [2023-01-28 05:24:14,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 464 transitions, 6616 flow [2023-01-28 05:24:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 05:24:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 05:24:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2145 transitions. [2023-01-28 05:24:14,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38468436154949787 [2023-01-28 05:24:14,467 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2145 transitions. [2023-01-28 05:24:14,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2145 transitions. [2023-01-28 05:24:14,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:14,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2145 transitions. [2023-01-28 05:24:14,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 126.17647058823529) internal successors, (2145), 17 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:14,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:14,473 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:14,473 INFO L175 Difference]: Start difference. First operand has 161 places, 169 transitions, 2319 flow. Second operand 17 states and 2145 transitions. [2023-01-28 05:24:14,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 464 transitions, 6616 flow [2023-01-28 05:24:15,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 464 transitions, 6013 flow, removed 134 selfloop flow, removed 15 redundant places. [2023-01-28 05:24:15,053 INFO L231 Difference]: Finished difference. Result has 168 places, 171 transitions, 2176 flow [2023-01-28 05:24:15,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2176, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2023-01-28 05:24:15,053 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2023-01-28 05:24:15,053 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 2176 flow [2023-01-28 05:24:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 120.54166666666667) internal successors, (2893), 24 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:15,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:15,054 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:15,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:15,259 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:15,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:15,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2025698849, now seen corresponding path program 12 times [2023-01-28 05:24:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713925541] [2023-01-28 05:24:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-01-28 05:24:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713925541] [2023-01-28 05:24:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713925541] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428537440] [2023-01-28 05:24:15,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:24:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:15,545 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 05:24:15,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-01-28 05:24:15,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:15,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 05:24:15,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-01-28 05:24:16,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-01-28 05:24:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428537440] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:16,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-01-28 05:24:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596959268] [2023-01-28 05:24:16,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:16,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 05:24:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 05:24:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2023-01-28 05:24:16,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:24:16,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 2176 flow. Second operand has 25 states, 25 states have (on average 120.36) internal successors, (3009), 25 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:16,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:16,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:24:16,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:17,894 INFO L130 PetriNetUnfolder]: 8448/11779 cut-off events. [2023-01-28 05:24:17,895 INFO L131 PetriNetUnfolder]: For 89172/89811 co-relation queries the response was YES. [2023-01-28 05:24:17,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65503 conditions, 11779 events. 8448/11779 cut-off events. For 89172/89811 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 57514 event pairs, 2151 based on Foata normal form. 856/12458 useless extension candidates. Maximal degree in co-relation 65406. Up to 5793 conditions per place. [2023-01-28 05:24:17,968 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 477 selfloop transitions, 20 changer transitions 0/518 dead transitions. [2023-01-28 05:24:17,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 518 transitions, 7364 flow [2023-01-28 05:24:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 05:24:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 05:24:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1739 transitions. [2023-01-28 05:24:17,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787020905923345 [2023-01-28 05:24:17,990 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1739 transitions. [2023-01-28 05:24:17,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1739 transitions. [2023-01-28 05:24:17,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:17,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1739 transitions. [2023-01-28 05:24:17,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 124.21428571428571) internal successors, (1739), 14 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:17,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 328.0) internal successors, (4920), 15 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:17,995 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 328.0) internal successors, (4920), 15 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:17,995 INFO L175 Difference]: Start difference. First operand has 168 places, 171 transitions, 2176 flow. Second operand 14 states and 1739 transitions. [2023-01-28 05:24:17,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 518 transitions, 7364 flow [2023-01-28 05:24:18,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 518 transitions, 7065 flow, removed 139 selfloop flow, removed 9 redundant places. [2023-01-28 05:24:18,344 INFO L231 Difference]: Finished difference. Result has 163 places, 172 transitions, 2145 flow [2023-01-28 05:24:18,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2145, PETRI_PLACES=163, PETRI_TRANSITIONS=172} [2023-01-28 05:24:18,345 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2023-01-28 05:24:18,345 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 172 transitions, 2145 flow [2023-01-28 05:24:18,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 120.36) internal successors, (3009), 25 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:18,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:18,345 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:18,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:18,550 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:18,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash 421770685, now seen corresponding path program 13 times [2023-01-28 05:24:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012986959] [2023-01-28 05:24:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-01-28 05:24:18,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012986959] [2023-01-28 05:24:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012986959] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475200974] [2023-01-28 05:24:18,720 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 05:24:18,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:18,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:18,721 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:18,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 05:24:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:18,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 05:24:18,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-01-28 05:24:19,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-01-28 05:24:19,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475200974] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:19,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:19,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-01-28 05:24:19,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105330855] [2023-01-28 05:24:19,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:19,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 05:24:19,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:19,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 05:24:19,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2023-01-28 05:24:19,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 328 [2023-01-28 05:24:19,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 172 transitions, 2145 flow. Second operand has 25 states, 25 states have (on average 120.6) internal successors, (3015), 25 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:19,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:19,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 328 [2023-01-28 05:24:19,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:20,574 INFO L130 PetriNetUnfolder]: 8881/12471 cut-off events. [2023-01-28 05:24:20,575 INFO L131 PetriNetUnfolder]: For 81543/81703 co-relation queries the response was YES. [2023-01-28 05:24:20,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71775 conditions, 12471 events. 8881/12471 cut-off events. For 81543/81703 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 58901 event pairs, 891 based on Foata normal form. 210/12680 useless extension candidates. Maximal degree in co-relation 71684. Up to 5977 conditions per place. [2023-01-28 05:24:20,649 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 201 selfloop transitions, 63 changer transitions 0/271 dead transitions. [2023-01-28 05:24:20,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 271 transitions, 3503 flow [2023-01-28 05:24:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 05:24:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 05:24:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1869 transitions. [2023-01-28 05:24:20,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798780487804878 [2023-01-28 05:24:20,652 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1869 transitions. [2023-01-28 05:24:20,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1869 transitions. [2023-01-28 05:24:20,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:20,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1869 transitions. [2023-01-28 05:24:20,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.6) internal successors, (1869), 15 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:20,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 328.0) internal successors, (5248), 16 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:20,656 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 328.0) internal successors, (5248), 16 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:20,656 INFO L175 Difference]: Start difference. First operand has 163 places, 172 transitions, 2145 flow. Second operand 15 states and 1869 transitions. [2023-01-28 05:24:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 271 transitions, 3503 flow [2023-01-28 05:24:21,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 271 transitions, 3385 flow, removed 26 selfloop flow, removed 11 redundant places. [2023-01-28 05:24:21,133 INFO L231 Difference]: Finished difference. Result has 168 places, 181 transitions, 2423 flow [2023-01-28 05:24:21,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2423, PETRI_PLACES=168, PETRI_TRANSITIONS=181} [2023-01-28 05:24:21,134 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2023-01-28 05:24:21,134 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 181 transitions, 2423 flow [2023-01-28 05:24:21,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 120.6) internal successors, (3015), 25 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:21,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:21,134 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:21,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-28 05:24:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:21,338 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:21,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1021162570, now seen corresponding path program 14 times [2023-01-28 05:24:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159343712] [2023-01-28 05:24:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 05:24:21,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:21,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159343712] [2023-01-28 05:24:21,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159343712] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:21,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608494301] [2023-01-28 05:24:21,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:24:21,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:21,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:21,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:21,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 05:24:21,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:24:21,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:21,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 05:24:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 05:24:21,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 05:24:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608494301] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:21,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-01-28 05:24:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665861131] [2023-01-28 05:24:21,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 05:24:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 05:24:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-28 05:24:21,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 328 [2023-01-28 05:24:21,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 181 transitions, 2423 flow. Second operand has 19 states, 19 states have (on average 142.94736842105263) internal successors, (2716), 19 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:21,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:21,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 328 [2023-01-28 05:24:21,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:24,733 INFO L130 PetriNetUnfolder]: 11936/16724 cut-off events. [2023-01-28 05:24:24,733 INFO L131 PetriNetUnfolder]: For 107878/108036 co-relation queries the response was YES. [2023-01-28 05:24:24,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94725 conditions, 16724 events. 11936/16724 cut-off events. For 107878/108036 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 81503 event pairs, 571 based on Foata normal form. 258/16982 useless extension candidates. Maximal degree in co-relation 94632. Up to 3428 conditions per place. [2023-01-28 05:24:24,840 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 553 selfloop transitions, 159 changer transitions 85/801 dead transitions. [2023-01-28 05:24:24,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 801 transitions, 8120 flow [2023-01-28 05:24:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 05:24:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 05:24:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6533 transitions. [2023-01-28 05:24:24,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320192853091324 [2023-01-28 05:24:24,861 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6533 transitions. [2023-01-28 05:24:24,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6533 transitions. [2023-01-28 05:24:24,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:24,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6533 transitions. [2023-01-28 05:24:24,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 151.93023255813952) internal successors, (6533), 43 states have internal predecessors, (6533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:24,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 328.0) internal successors, (14432), 44 states have internal predecessors, (14432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:24,881 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 328.0) internal successors, (14432), 44 states have internal predecessors, (14432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:24,881 INFO L175 Difference]: Start difference. First operand has 168 places, 181 transitions, 2423 flow. Second operand 43 states and 6533 transitions. [2023-01-28 05:24:24,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 801 transitions, 8120 flow [2023-01-28 05:24:25,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 801 transitions, 8012 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-28 05:24:25,561 INFO L231 Difference]: Finished difference. Result has 206 places, 233 transitions, 3574 flow [2023-01-28 05:24:25,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3574, PETRI_PLACES=206, PETRI_TRANSITIONS=233} [2023-01-28 05:24:25,561 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 173 predicate places. [2023-01-28 05:24:25,561 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 233 transitions, 3574 flow [2023-01-28 05:24:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 142.94736842105263) internal successors, (2716), 19 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:25,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:24:25,562 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:25,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 05:24:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:25,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:24:25,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:24:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1430726769, now seen corresponding path program 15 times [2023-01-28 05:24:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:24:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589596070] [2023-01-28 05:24:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:24:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:24:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:24:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 05:24:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:24:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589596070] [2023-01-28 05:24:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589596070] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:24:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431756336] [2023-01-28 05:24:25,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:24:25,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:24:25,952 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:24:25,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 05:24:26,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 05:24:26,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:24:26,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:24:26,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:24:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-01-28 05:24:26,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:24:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-01-28 05:24:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431756336] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:24:26,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:24:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 18 [2023-01-28 05:24:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705912970] [2023-01-28 05:24:26,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:24:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 05:24:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:24:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 05:24:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-01-28 05:24:26,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 328 [2023-01-28 05:24:26,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 233 transitions, 3574 flow. Second operand has 18 states, 18 states have (on average 114.88888888888889) internal successors, (2068), 18 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:26,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:24:26,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 328 [2023-01-28 05:24:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:24:30,871 INFO L130 PetriNetUnfolder]: 19835/27920 cut-off events. [2023-01-28 05:24:30,872 INFO L131 PetriNetUnfolder]: For 210916/211176 co-relation queries the response was YES. [2023-01-28 05:24:31,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166503 conditions, 27920 events. 19835/27920 cut-off events. For 210916/211176 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 150296 event pairs, 192 based on Foata normal form. 586/28506 useless extension candidates. Maximal degree in co-relation 159348. Up to 5793 conditions per place. [2023-01-28 05:24:31,031 INFO L137 encePairwiseOnDemand]: 314/328 looper letters, 0 selfloop transitions, 0 changer transitions 1270/1270 dead transitions. [2023-01-28 05:24:31,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1270 transitions, 18792 flow [2023-01-28 05:24:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-01-28 05:24:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-01-28 05:24:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 5852 transitions. [2023-01-28 05:24:31,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641114982578397 [2023-01-28 05:24:31,036 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 5852 transitions. [2023-01-28 05:24:31,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 5852 transitions. [2023-01-28 05:24:31,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:31,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 5852 transitions. [2023-01-28 05:24:31,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 119.42857142857143) internal successors, (5852), 49 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:31,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 328.0) internal successors, (16400), 50 states have internal predecessors, (16400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:31,050 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 328.0) internal successors, (16400), 50 states have internal predecessors, (16400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:31,050 INFO L175 Difference]: Start difference. First operand has 206 places, 233 transitions, 3574 flow. Second operand 49 states and 5852 transitions. [2023-01-28 05:24:31,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1270 transitions, 18792 flow [2023-01-28 05:24:32,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1270 transitions, 16260 flow, removed 293 selfloop flow, removed 32 redundant places. [2023-01-28 05:24:32,832 INFO L231 Difference]: Finished difference. Result has 219 places, 0 transitions, 0 flow [2023-01-28 05:24:32,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=0, PETRI_PLACES=219, PETRI_TRANSITIONS=0} [2023-01-28 05:24:32,832 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2023-01-28 05:24:32,832 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 0 transitions, 0 flow [2023-01-28 05:24:32,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 114.88888888888889) internal successors, (2068), 18 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:32,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 05:24:32,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 05:24:32,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 05:24:32,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 05:24:32,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-01-28 05:24:33,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:24:33,040 INFO L445 BasicCegarLoop]: Path program histogram: [15, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:24:33,043 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:24:33,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:24:33,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:24:33 BasicIcfg [2023-01-28 05:24:33,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:24:33,045 INFO L158 Benchmark]: Toolchain (without parser) took 46743.35ms. Allocated memory was 742.4MB in the beginning and 9.4GB in the end (delta: 8.6GB). Free memory was 693.5MB in the beginning and 7.8GB in the end (delta: -7.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-01-28 05:24:33,045 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 404.8MB. Free memory is still 353.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:24:33,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.96ms. Allocated memory is still 742.4MB. Free memory was 693.2MB in the beginning and 681.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 05:24:33,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.64ms. Allocated memory is still 742.4MB. Free memory was 681.6MB in the beginning and 679.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:24:33,045 INFO L158 Benchmark]: Boogie Preprocessor took 18.91ms. Allocated memory is still 742.4MB. Free memory was 679.8MB in the beginning and 678.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:24:33,046 INFO L158 Benchmark]: RCFGBuilder took 388.06ms. Allocated memory is still 742.4MB. Free memory was 678.1MB in the beginning and 659.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 05:24:33,046 INFO L158 Benchmark]: TraceAbstraction took 46075.89ms. Allocated memory was 742.4MB in the beginning and 9.4GB in the end (delta: 8.6GB). Free memory was 658.5MB in the beginning and 7.8GB in the end (delta: -7.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-01-28 05:24:33,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 404.8MB. Free memory is still 353.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 231.96ms. Allocated memory is still 742.4MB. Free memory was 693.2MB in the beginning and 681.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.64ms. Allocated memory is still 742.4MB. Free memory was 681.6MB in the beginning and 679.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.91ms. Allocated memory is still 742.4MB. Free memory was 679.8MB in the beginning and 678.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 388.06ms. Allocated memory is still 742.4MB. Free memory was 678.1MB in the beginning and 659.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 46075.89ms. Allocated memory was 742.4MB in the beginning and 9.4GB in the end (delta: 8.6GB). Free memory was 658.5MB in the beginning and 7.8GB in the end (delta: -7.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 155 PlacesBefore, 33 PlacesAfterwards, 161 TransitionsBefore, 29 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 6 ConcurrentYvCompositions, 10 ChoiceCompositions, 154 TotalNumberOfCompositions, 2460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2032, independent: 1969, independent conditional: 0, independent unconditional: 1969, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 921, independent: 904, independent conditional: 0, independent unconditional: 904, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2032, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 921, unknown conditional: 0, unknown unconditional: 921] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 194 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 46.0s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 28.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3647 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3647 mSDsluCounter, 232 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 234 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9511 IncrementalHoareTripleChecker+Invalid, 9745 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 234 mSolverCounterUnsat, 53 mSDtfsCounter, 9511 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1682 GetRequests, 1158 SyntacticMatches, 51 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3574occurred in iteration=21, InterpolantAutomatonStates: 316, 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: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 1406 NumberOfCodeBlocks, 1386 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 2004 ConstructedInterpolants, 0 QuantifiedInterpolants, 5986 SizeOfPredicates, 61 NumberOfNonLiveVariables, 5492 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 58 InterpolantComputations, 8 PerfectInterpolantSequences, 1083/1438 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 05:24:33,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...