/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 22:05:19,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 22:05:19,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 22:05:19,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 22:05:19,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 22:05:19,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 22:05:19,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 22:05:19,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 22:05:19,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 22:05:19,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 22:05:19,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 22:05:19,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 22:05:19,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 22:05:19,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 22:05:19,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 22:05:19,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 22:05:19,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 22:05:19,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 22:05:19,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 22:05:19,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 22:05:19,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 22:05:19,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 22:05:19,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 22:05:19,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 22:05:19,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 22:05:19,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 22:05:19,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 22:05:19,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 22:05:19,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 22:05:19,201 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 22:05:19,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 22:05:19,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 22:05:19,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 22:05:19,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 22:05:19,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 22:05:19,203 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 22:05:19,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 22:05:19,204 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 22:05:19,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 22:05:19,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 22:05:19,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 22:05:19,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 22:05:19,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:05:19,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 22:05:19,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 22:05:19,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 22:05:19,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 22:05:19,207 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 22:05:19,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 22:05:19,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 22:05:19,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 22:05:19,400 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 22:05:19,400 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 22:05:19,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-01-27 22:05:20,294 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 22:05:20,470 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 22:05:20,470 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-01-27 22:05:20,475 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03890c89c/7d2dd973b3974753b7041eb9d3260c84/FLAG5e44da122 [2023-01-27 22:05:20,489 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03890c89c/7d2dd973b3974753b7041eb9d3260c84 [2023-01-27 22:05:20,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 22:05:20,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 22:05:20,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 22:05:20,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 22:05:20,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 22:05:20,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17284a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20, skipping insertion in model container [2023-01-27 22:05:20,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 22:05:20,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 22:05:20,644 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-more-max-array-hom.wvr.c[2586,2599] [2023-01-27 22:05:20,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:05:20,660 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 22:05:20,680 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-more-max-array-hom.wvr.c[2586,2599] [2023-01-27 22:05:20,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:05:20,687 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 22:05:20,687 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 22:05:20,691 INFO L208 MainTranslator]: Completed translation [2023-01-27 22:05:20,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20 WrapperNode [2023-01-27 22:05:20,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 22:05:20,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 22:05:20,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 22:05:20,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 22:05:20,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,719 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-01-27 22:05:20,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 22:05:20,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 22:05:20,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 22:05:20,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 22:05:20,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 22:05:20,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 22:05:20,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 22:05:20,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 22:05:20,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (1/1) ... [2023-01-27 22:05:20,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:05:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:20,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 22:05:20,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 22:05:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 22:05:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 22:05:20,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 22:05:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 22:05:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 22:05:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 22:05:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 22:05:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 22:05:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 22:05:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 22:05:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 22:05:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 22:05:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 22:05:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 22:05:20,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 22:05:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 22:05:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 22:05:20,809 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 22:05:20,936 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 22:05:20,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 22:05:21,159 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 22:05:21,202 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 22:05:21,202 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 22:05:21,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:05:21 BoogieIcfgContainer [2023-01-27 22:05:21,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 22:05:21,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 22:05:21,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 22:05:21,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 22:05:21,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 10:05:20" (1/3) ... [2023-01-27 22:05:21,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72111017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:05:21, skipping insertion in model container [2023-01-27 22:05:21,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:05:20" (2/3) ... [2023-01-27 22:05:21,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72111017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:05:21, skipping insertion in model container [2023-01-27 22:05:21,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:05:21" (3/3) ... [2023-01-27 22:05:21,208 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-01-27 22:05:21,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 22:05:21,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 22:05:21,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 22:05:21,270 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 22:05:21,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 145 transitions, 314 flow [2023-01-27 22:05:21,332 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2023-01-27 22:05:21,333 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:05:21,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 12/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-01-27 22:05:21,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 145 transitions, 314 flow [2023-01-27 22:05:21,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 132 transitions, 282 flow [2023-01-27 22:05:21,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 22:05:21,350 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 282 flow [2023-01-27 22:05:21,352 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 282 flow [2023-01-27 22:05:21,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 282 flow [2023-01-27 22:05:21,383 INFO L130 PetriNetUnfolder]: 12/132 cut-off events. [2023-01-27 22:05:21,383 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:05:21,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 12/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-01-27 22:05:21,387 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-27 22:05:25,146 INFO L134 LiptonReduction]: Checked pairs total: 1523 [2023-01-27 22:05:25,146 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-01-27 22:05:25,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 22:05:25,168 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;@422ba87b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 22:05:25,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 22:05:25,181 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-27 22:05:25,181 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:05:25,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:25,182 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] [2023-01-27 22:05:25,183 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)] === [2023-01-27 22:05:25,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:25,188 INFO L85 PathProgramCache]: Analyzing trace with hash -924859563, now seen corresponding path program 1 times [2023-01-27 22:05:25,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:25,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528900813] [2023-01-27 22:05:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:25,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:25,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528900813] [2023-01-27 22:05:25,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528900813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:05:25,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:05:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 22:05:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507647092] [2023-01-27 22:05:25,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:05:25,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 22:05:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:05:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 22:05:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 22:05:25,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 267 [2023-01-27 22:05:25,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:25,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:05:25,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 267 [2023-01-27 22:05:25,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:05:25,858 INFO L130 PetriNetUnfolder]: 269/376 cut-off events. [2023-01-27 22:05:25,858 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-27 22:05:25,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 376 events. 269/376 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1112 event pairs, 117 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 593. Up to 367 conditions per place. [2023-01-27 22:05:25,862 INFO L137 encePairwiseOnDemand]: 264/267 looper letters, 20 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-27 22:05:25,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 112 flow [2023-01-27 22:05:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 22:05:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 22:05:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-01-27 22:05:25,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332084893882647 [2023-01-27 22:05:25,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-01-27 22:05:25,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-01-27 22:05:25,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:05:25,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-01-27 22:05:25,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:25,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:25,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:25,890 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 347 transitions. [2023-01-27 22:05:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 112 flow [2023-01-27 22:05:25,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 22:05:25,899 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-01-27 22:05:25,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-01-27 22:05:25,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-27 22:05:25,904 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-01-27 22:05:25,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:25,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:25,904 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] [2023-01-27 22:05:25,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 22:05:25,905 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)] === [2023-01-27 22:05:25,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash 313336442, now seen corresponding path program 1 times [2023-01-27 22:05:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433566790] [2023-01-27 22:05:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433566790] [2023-01-27 22:05:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433566790] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682131459] [2023-01-27 22:05:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:26,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:26,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:26,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:05:26,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 22:05:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:26,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:05:26,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:05:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:26,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:05:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682131459] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:26,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:05:26,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-27 22:05:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674586020] [2023-01-27 22:05:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:05:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:05:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:05:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:05:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-27 22:05:26,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-27 22:05:26,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:26,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:05:26,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-27 22:05:26,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:05:26,378 INFO L130 PetriNetUnfolder]: 309/442 cut-off events. [2023-01-27 22:05:26,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 22:05:26,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 442 events. 309/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1394 event pairs, 49 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 889. Up to 335 conditions per place. [2023-01-27 22:05:26,385 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 29 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-01-27 22:05:26,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 154 flow [2023-01-27 22:05:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:05:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:05:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-01-27 22:05:26,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41872659176029964 [2023-01-27 22:05:26,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-01-27 22:05:26,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-01-27 22:05:26,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:05:26,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-01-27 22:05:26,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:26,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:26,390 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:26,391 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 559 transitions. [2023-01-27 22:05:26,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 154 flow [2023-01-27 22:05:26,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 22:05:26,392 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 78 flow [2023-01-27 22:05:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-01-27 22:05:26,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-27 22:05:26,392 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 78 flow [2023-01-27 22:05:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:26,393 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] [2023-01-27 22:05:26,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 22:05:26,593 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 [2023-01-27 22:05:26,594 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)] === [2023-01-27 22:05:26,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1604052521, now seen corresponding path program 1 times [2023-01-27 22:05:26,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:26,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476846950] [2023-01-27 22:05:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:26,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:05:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476846950] [2023-01-27 22:05:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476846950] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735312471] [2023-01-27 22:05:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:26,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:26,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:05:26,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 22:05:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:26,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:05:26,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:05:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:05:26,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:05:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:05:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735312471] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:26,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:05:26,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-01-27 22:05:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496723348] [2023-01-27 22:05:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:05:26,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:05:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:05:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:05:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-27 22:05:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:05:26,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:26,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:05:26,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:05:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:05:27,016 INFO L130 PetriNetUnfolder]: 409/609 cut-off events. [2023-01-27 22:05:27,016 INFO L131 PetriNetUnfolder]: For 108/152 co-relation queries the response was YES. [2023-01-27 22:05:27,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 609 events. 409/609 cut-off events. For 108/152 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1976 event pairs, 138 based on Foata normal form. 44/483 useless extension candidates. Maximal degree in co-relation 1407. Up to 345 conditions per place. [2023-01-27 22:05:27,021 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 52 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-01-27 22:05:27,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 300 flow [2023-01-27 22:05:27,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:05:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:05:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 744 transitions. [2023-01-27 22:05:27,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39807383627608345 [2023-01-27 22:05:27,023 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 744 transitions. [2023-01-27 22:05:27,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 744 transitions. [2023-01-27 22:05:27,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:05:27,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 744 transitions. [2023-01-27 22:05:27,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,028 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,028 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 78 flow. Second operand 7 states and 744 transitions. [2023-01-27 22:05:27,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 300 flow [2023-01-27 22:05:27,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 283 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 22:05:27,030 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 120 flow [2023-01-27 22:05:27,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=120, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-01-27 22:05:27,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2023-01-27 22:05:27,031 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 120 flow [2023-01-27 22:05:27,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:27,032 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] [2023-01-27 22:05:27,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 22:05:27,236 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,SelfDestructingSolverStorable2 [2023-01-27 22:05:27,237 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)] === [2023-01-27 22:05:27,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:27,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1189152529, now seen corresponding path program 2 times [2023-01-27 22:05:27,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18647827] [2023-01-27 22:05:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:27,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18647827] [2023-01-27 22:05:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18647827] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:27,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967402072] [2023-01-27 22:05:27,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:05:27,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:27,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:27,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:05:27,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 22:05:27,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 22:05:27,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:05:27,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 22:05:27,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:05:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:05:27,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 22:05:27,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967402072] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:05:27,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 22:05:27,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-01-27 22:05:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327377410] [2023-01-27 22:05:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:05:27,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:05:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:05:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:05:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-27 22:05:27,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-01-27 22:05:27,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:05:27,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-01-27 22:05:27,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:05:27,583 INFO L130 PetriNetUnfolder]: 312/464 cut-off events. [2023-01-27 22:05:27,584 INFO L131 PetriNetUnfolder]: For 218/247 co-relation queries the response was YES. [2023-01-27 22:05:27,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 464 events. 312/464 cut-off events. For 218/247 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1477 event pairs, 119 based on Foata normal form. 55/416 useless extension candidates. Maximal degree in co-relation 1317. Up to 330 conditions per place. [2023-01-27 22:05:27,586 INFO L137 encePairwiseOnDemand]: 263/267 looper letters, 34 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-01-27 22:05:27,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 228 flow [2023-01-27 22:05:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 22:05:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 22:05:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 481 transitions. [2023-01-27 22:05:27,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450374531835206 [2023-01-27 22:05:27,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 481 transitions. [2023-01-27 22:05:27,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 481 transitions. [2023-01-27 22:05:27,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:05:27,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 481 transitions. [2023-01-27 22:05:27,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,590 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 120 flow. Second operand 4 states and 481 transitions. [2023-01-27 22:05:27,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 228 flow [2023-01-27 22:05:27,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 217 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 22:05:27,593 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 125 flow [2023-01-27 22:05:27,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-01-27 22:05:27,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-27 22:05:27,594 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 125 flow [2023-01-27 22:05:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:27,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:27,595 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] [2023-01-27 22:05:27,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 22:05:27,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:27,799 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)] === [2023-01-27 22:05:27,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1697474197, now seen corresponding path program 1 times [2023-01-27 22:05:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225731963] [2023-01-27 22:05:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:28,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:28,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225731963] [2023-01-27 22:05:28,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225731963] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:28,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009083620] [2023-01-27 22:05:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:28,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:28,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:28,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:05:28,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 22:05:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:28,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-27 22:05:28,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:05:28,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:05:28,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:05:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:05:28,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-27 22:05:29,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:05:29,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-27 22:05:29,227 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:05:29,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:29,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-01-27 22:05:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:29,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:05:29,783 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~max1~0 c_~max2~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or .cse0 (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~A~0.base) .cse2))) (or (< c_~max2~0 .cse1) (<= .cse1 c_~max3~0))))) (or (and (or .cse0 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (< c_~max3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~A~0.base) .cse2)))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~A~0.base) .cse2))) (or (= c_~max1~0 .cse3) (<= .cse3 c_~max2~0) (<= .cse3 c_~max3~0)))))) is different from false [2023-01-27 22:05:52,942 WARN L222 SmtUtils]: Spent 22.27s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:05:53,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:53,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-01-27 22:05:53,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:53,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 307 [2023-01-27 22:05:53,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2023-01-27 22:05:53,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:53,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 63 [2023-01-27 22:05:53,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-01-27 22:05:53,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:53,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 73 [2023-01-27 22:05:53,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:53,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 329 treesize of output 313 [2023-01-27 22:05:53,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 223 [2023-01-27 22:05:53,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 199 [2023-01-27 22:05:53,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:53,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 115 [2023-01-27 22:05:54,046 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:54,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-01-27 22:05:54,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:54,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 324 [2023-01-27 22:05:54,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 112 [2023-01-27 22:05:54,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:54,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 70 [2023-01-27 22:05:54,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-01-27 22:05:54,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:54,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-01-27 22:05:54,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:54,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1264 treesize of output 1200 [2023-01-27 22:05:54,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:54,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2023-01-27 22:05:54,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-01-27 22:05:54,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 46 [2023-01-27 22:05:54,424 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:05:54,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 1 [2023-01-27 22:05:54,433 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:05:54,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 1 [2023-01-27 22:05:54,442 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:05:54,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 1 [2023-01-27 22:05:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:54,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009083620] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:05:54,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:05:54,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-01-27 22:05:54,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165181387] [2023-01-27 22:05:54,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:05:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 22:05:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:05:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 22:05:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=679, Unknown=8, NotChecked=54, Total=870 [2023-01-27 22:05:54,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 267 [2023-01-27 22:05:54,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 125 flow. Second operand has 30 states, 30 states have (on average 74.2) internal successors, (2226), 30 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:54,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:05:54,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 267 [2023-01-27 22:05:54,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:05:58,173 INFO L130 PetriNetUnfolder]: 810/1186 cut-off events. [2023-01-27 22:05:58,173 INFO L131 PetriNetUnfolder]: For 1184/1197 co-relation queries the response was YES. [2023-01-27 22:05:58,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 1186 events. 810/1186 cut-off events. For 1184/1197 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4682 event pairs, 60 based on Foata normal form. 14/956 useless extension candidates. Maximal degree in co-relation 2886. Up to 725 conditions per place. [2023-01-27 22:05:58,179 INFO L137 encePairwiseOnDemand]: 251/267 looper letters, 82 selfloop transitions, 53 changer transitions 1/138 dead transitions. [2023-01-27 22:05:58,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 138 transitions, 825 flow [2023-01-27 22:05:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 22:05:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 22:05:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 899 transitions. [2023-01-27 22:05:58,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30609465440926115 [2023-01-27 22:05:58,181 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 899 transitions. [2023-01-27 22:05:58,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 899 transitions. [2023-01-27 22:05:58,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:05:58,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 899 transitions. [2023-01-27 22:05:58,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 81.72727272727273) internal successors, (899), 11 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:58,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:58,186 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:58,186 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 125 flow. Second operand 11 states and 899 transitions. [2023-01-27 22:05:58,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 138 transitions, 825 flow [2023-01-27 22:05:58,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 138 transitions, 749 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-27 22:05:58,193 INFO L231 Difference]: Finished difference. Result has 50 places, 83 transitions, 499 flow [2023-01-27 22:05:58,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=499, PETRI_PLACES=50, PETRI_TRANSITIONS=83} [2023-01-27 22:05:58,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-01-27 22:05:58,195 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 83 transitions, 499 flow [2023-01-27 22:05:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.2) internal successors, (2226), 30 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:05:58,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:58,196 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] [2023-01-27 22:05:58,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 22:05:58,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:58,401 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)] === [2023-01-27 22:05:58,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1093688525, now seen corresponding path program 2 times [2023-01-27 22:05:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:58,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339943972] [2023-01-27 22:05:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:05:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339943972] [2023-01-27 22:05:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339943972] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146062783] [2023-01-27 22:05:58,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:05:58,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:58,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:58,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:05:58,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 22:05:59,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:05:59,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:05:59,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 22:05:59,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:05:59,445 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:05:59,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:59,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-01-27 22:05:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:05:59,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:05:59,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:05:59,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 69 [2023-01-27 22:06:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:00,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146062783] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:00,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:00,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 25 [2023-01-27 22:06:00,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589558213] [2023-01-27 22:06:00,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:00,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 22:06:00,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:00,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 22:06:00,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-01-27 22:06:00,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 267 [2023-01-27 22:06:00,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 83 transitions, 499 flow. Second operand has 27 states, 27 states have (on average 81.55555555555556) internal successors, (2202), 27 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:00,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:00,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 267 [2023-01-27 22:06:00,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:00,777 INFO L130 PetriNetUnfolder]: 1063/1559 cut-off events. [2023-01-27 22:06:00,777 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2023-01-27 22:06:00,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 1559 events. 1063/1559 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5922 event pairs, 148 based on Foata normal form. 1/1559 useless extension candidates. Maximal degree in co-relation 5364. Up to 1203 conditions per place. [2023-01-27 22:06:00,785 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 101 selfloop transitions, 58 changer transitions 1/160 dead transitions. [2023-01-27 22:06:00,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 160 transitions, 1227 flow [2023-01-27 22:06:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 22:06:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 22:06:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1034 transitions. [2023-01-27 22:06:00,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3227215980024969 [2023-01-27 22:06:00,788 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1034 transitions. [2023-01-27 22:06:00,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1034 transitions. [2023-01-27 22:06:00,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:00,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1034 transitions. [2023-01-27 22:06:00,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.16666666666667) internal successors, (1034), 12 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:00,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:00,795 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:00,795 INFO L175 Difference]: Start difference. First operand has 50 places, 83 transitions, 499 flow. Second operand 12 states and 1034 transitions. [2023-01-27 22:06:00,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 160 transitions, 1227 flow [2023-01-27 22:06:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 160 transitions, 1205 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-01-27 22:06:00,803 INFO L231 Difference]: Finished difference. Result has 67 places, 120 transitions, 917 flow [2023-01-27 22:06:00,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=67, PETRI_TRANSITIONS=120} [2023-01-27 22:06:00,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2023-01-27 22:06:00,805 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 120 transitions, 917 flow [2023-01-27 22:06:00,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.55555555555556) internal successors, (2202), 27 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:00,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:00,806 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] [2023-01-27 22:06:00,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:01,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:01,012 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)] === [2023-01-27 22:06:01,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1676278017, now seen corresponding path program 3 times [2023-01-27 22:06:01,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:01,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786092441] [2023-01-27 22:06:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:01,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786092441] [2023-01-27 22:06:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786092441] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269523888] [2023-01-27 22:06:01,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:06:01,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:01,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:06:01,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 22:06:01,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:06:01,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:01,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 22:06:01,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:01,803 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:06:01,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:01,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-01-27 22:06:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:01,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:02,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:02,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 69 [2023-01-27 22:06:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269523888] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:02,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-01-27 22:06:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023173717] [2023-01-27 22:06:02,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:02,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 22:06:02,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 22:06:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-01-27 22:06:02,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 267 [2023-01-27 22:06:02,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 120 transitions, 917 flow. Second operand has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:02,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:02,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 267 [2023-01-27 22:06:02,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:03,260 INFO L130 PetriNetUnfolder]: 1421/2114 cut-off events. [2023-01-27 22:06:03,260 INFO L131 PetriNetUnfolder]: For 5875/5990 co-relation queries the response was YES. [2023-01-27 22:06:03,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 2114 events. 1421/2114 cut-off events. For 5875/5990 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9375 event pairs, 169 based on Foata normal form. 22/2094 useless extension candidates. Maximal degree in co-relation 8454. Up to 1303 conditions per place. [2023-01-27 22:06:03,272 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 130 selfloop transitions, 110 changer transitions 4/248 dead transitions. [2023-01-27 22:06:03,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 248 transitions, 2188 flow [2023-01-27 22:06:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 22:06:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 22:06:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1193 transitions. [2023-01-27 22:06:03,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34370498415442235 [2023-01-27 22:06:03,275 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1193 transitions. [2023-01-27 22:06:03,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1193 transitions. [2023-01-27 22:06:03,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:03,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1193 transitions. [2023-01-27 22:06:03,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.76923076923077) internal successors, (1193), 13 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:03,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 267.0) internal successors, (3738), 14 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:03,281 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 267.0) internal successors, (3738), 14 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:03,281 INFO L175 Difference]: Start difference. First operand has 67 places, 120 transitions, 917 flow. Second operand 13 states and 1193 transitions. [2023-01-27 22:06:03,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 248 transitions, 2188 flow [2023-01-27 22:06:03,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 248 transitions, 2146 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-01-27 22:06:03,294 INFO L231 Difference]: Finished difference. Result has 83 places, 169 transitions, 1619 flow [2023-01-27 22:06:03,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1619, PETRI_PLACES=83, PETRI_TRANSITIONS=169} [2023-01-27 22:06:03,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2023-01-27 22:06:03,295 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 169 transitions, 1619 flow [2023-01-27 22:06:03,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:03,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:03,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:03,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:03,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:03,501 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)] === [2023-01-27 22:06:03,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1261622275, now seen corresponding path program 4 times [2023-01-27 22:06:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:03,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501702410] [2023-01-27 22:06:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:03,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:03,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501702410] [2023-01-27 22:06:03,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501702410] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:03,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683013036] [2023-01-27 22:06:03,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:06:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:03,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:03,970 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) [2023-01-27 22:06:03,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 22:06:04,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:06:04,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:04,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 22:06:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:04,383 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-27 22:06:04,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 63 [2023-01-27 22:06:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:04,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:04,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:04,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 69 [2023-01-27 22:06:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683013036] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:04,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 25 [2023-01-27 22:06:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154135883] [2023-01-27 22:06:04,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:04,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 22:06:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 22:06:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-01-27 22:06:04,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 267 [2023-01-27 22:06:04,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 169 transitions, 1619 flow. Second operand has 27 states, 27 states have (on average 81.29629629629629) internal successors, (2195), 27 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:04,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:04,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 267 [2023-01-27 22:06:04,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:07,193 INFO L130 PetriNetUnfolder]: 2892/4445 cut-off events. [2023-01-27 22:06:07,193 INFO L131 PetriNetUnfolder]: For 16905/16905 co-relation queries the response was YES. [2023-01-27 22:06:07,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21891 conditions, 4445 events. 2892/4445 cut-off events. For 16905/16905 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23354 event pairs, 132 based on Foata normal form. 4/4449 useless extension candidates. Maximal degree in co-relation 21033. Up to 1933 conditions per place. [2023-01-27 22:06:07,216 INFO L137 encePairwiseOnDemand]: 252/267 looper letters, 265 selfloop transitions, 300 changer transitions 16/581 dead transitions. [2023-01-27 22:06:07,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 581 transitions, 5961 flow [2023-01-27 22:06:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-27 22:06:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-27 22:06:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2548 transitions. [2023-01-27 22:06:07,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3290714193465065 [2023-01-27 22:06:07,222 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2548 transitions. [2023-01-27 22:06:07,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2548 transitions. [2023-01-27 22:06:07,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:07,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2548 transitions. [2023-01-27 22:06:07,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 87.86206896551724) internal successors, (2548), 29 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:07,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:07,234 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:07,234 INFO L175 Difference]: Start difference. First operand has 83 places, 169 transitions, 1619 flow. Second operand 29 states and 2548 transitions. [2023-01-27 22:06:07,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 581 transitions, 5961 flow [2023-01-27 22:06:07,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 581 transitions, 5769 flow, removed 70 selfloop flow, removed 4 redundant places. [2023-01-27 22:06:07,295 INFO L231 Difference]: Finished difference. Result has 126 places, 392 transitions, 4632 flow [2023-01-27 22:06:07,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4632, PETRI_PLACES=126, PETRI_TRANSITIONS=392} [2023-01-27 22:06:07,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2023-01-27 22:06:07,297 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 392 transitions, 4632 flow [2023-01-27 22:06:07,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.29629629629629) internal successors, (2195), 27 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:07,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:07,298 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] [2023-01-27 22:06:07,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:07,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:07,503 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)] === [2023-01-27 22:06:07,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -542212045, now seen corresponding path program 5 times [2023-01-27 22:06:07,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:07,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164679800] [2023-01-27 22:06:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164679800] [2023-01-27 22:06:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164679800] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129525943] [2023-01-27 22:06:08,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:06:08,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:08,209 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) [2023-01-27 22:06:08,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 22:06:08,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:06:08,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:08,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 22:06:08,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:08,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2023-01-27 22:06:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:08,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:08,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:08,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 69 [2023-01-27 22:06:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129525943] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:09,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 25 [2023-01-27 22:06:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467306594] [2023-01-27 22:06:09,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:09,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 22:06:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 22:06:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-01-27 22:06:09,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-27 22:06:09,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 392 transitions, 4632 flow. Second operand has 27 states, 27 states have (on average 71.55555555555556) internal successors, (1932), 27 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:09,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:09,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-27 22:06:09,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:11,568 INFO L130 PetriNetUnfolder]: 3079/4770 cut-off events. [2023-01-27 22:06:11,572 INFO L131 PetriNetUnfolder]: For 37489/37489 co-relation queries the response was YES. [2023-01-27 22:06:11,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29774 conditions, 4770 events. 3079/4770 cut-off events. For 37489/37489 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25601 event pairs, 310 based on Foata normal form. 33/4803 useless extension candidates. Maximal degree in co-relation 29664. Up to 3422 conditions per place. [2023-01-27 22:06:11,601 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 342 selfloop transitions, 220 changer transitions 5/567 dead transitions. [2023-01-27 22:06:11,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 567 transitions, 7473 flow [2023-01-27 22:06:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-27 22:06:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-27 22:06:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2198 transitions. [2023-01-27 22:06:11,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28386930130440396 [2023-01-27 22:06:11,606 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2198 transitions. [2023-01-27 22:06:11,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2198 transitions. [2023-01-27 22:06:11,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:11,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2198 transitions. [2023-01-27 22:06:11,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 75.79310344827586) internal successors, (2198), 29 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:11,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:11,617 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:11,617 INFO L175 Difference]: Start difference. First operand has 126 places, 392 transitions, 4632 flow. Second operand 29 states and 2198 transitions. [2023-01-27 22:06:11,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 567 transitions, 7473 flow [2023-01-27 22:06:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 567 transitions, 7143 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-01-27 22:06:11,727 INFO L231 Difference]: Finished difference. Result has 160 places, 454 transitions, 5904 flow [2023-01-27 22:06:11,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5904, PETRI_PLACES=160, PETRI_TRANSITIONS=454} [2023-01-27 22:06:11,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2023-01-27 22:06:11,728 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 454 transitions, 5904 flow [2023-01-27 22:06:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 71.55555555555556) internal successors, (1932), 27 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:11,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:11,729 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] [2023-01-27 22:06:11,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 22:06:11,933 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,SelfDestructingSolverStorable8 [2023-01-27 22:06:11,934 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)] === [2023-01-27 22:06:11,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1240361973, now seen corresponding path program 6 times [2023-01-27 22:06:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:11,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567396593] [2023-01-27 22:06:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567396593] [2023-01-27 22:06:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567396593] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606758539] [2023-01-27 22:06:12,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:06:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:12,399 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) [2023-01-27 22:06:12,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 22:06:12,479 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 22:06:12,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:12,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 22:06:12,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:12,798 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-27 22:06:12,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-01-27 22:06:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:12,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:13,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:13,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 69 [2023-01-27 22:06:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:13,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606758539] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:13,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:13,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-01-27 22:06:13,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678237660] [2023-01-27 22:06:13,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:13,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 22:06:13,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:13,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 22:06:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-01-27 22:06:13,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 267 [2023-01-27 22:06:13,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 454 transitions, 5904 flow. Second operand has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:13,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:13,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 267 [2023-01-27 22:06:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:14,438 INFO L130 PetriNetUnfolder]: 3040/4779 cut-off events. [2023-01-27 22:06:14,438 INFO L131 PetriNetUnfolder]: For 47288/47455 co-relation queries the response was YES. [2023-01-27 22:06:14,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31701 conditions, 4779 events. 3040/4779 cut-off events. For 47288/47455 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 26609 event pairs, 571 based on Foata normal form. 112/4841 useless extension candidates. Maximal degree in co-relation 31318. Up to 4219 conditions per place. [2023-01-27 22:06:14,470 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 373 selfloop transitions, 128 changer transitions 1/516 dead transitions. [2023-01-27 22:06:14,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 516 transitions, 7662 flow [2023-01-27 22:06:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 22:06:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 22:06:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 983 transitions. [2023-01-27 22:06:14,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33469526727953697 [2023-01-27 22:06:14,471 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 983 transitions. [2023-01-27 22:06:14,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 983 transitions. [2023-01-27 22:06:14,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:14,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 983 transitions. [2023-01-27 22:06:14,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.36363636363636) internal successors, (983), 11 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:14,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:14,475 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:14,476 INFO L175 Difference]: Start difference. First operand has 160 places, 454 transitions, 5904 flow. Second operand 11 states and 983 transitions. [2023-01-27 22:06:14,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 516 transitions, 7662 flow [2023-01-27 22:06:14,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 516 transitions, 7298 flow, removed 112 selfloop flow, removed 8 redundant places. [2023-01-27 22:06:14,635 INFO L231 Difference]: Finished difference. Result has 166 places, 480 transitions, 6284 flow [2023-01-27 22:06:14,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6284, PETRI_PLACES=166, PETRI_TRANSITIONS=480} [2023-01-27 22:06:14,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2023-01-27 22:06:14,636 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 480 transitions, 6284 flow [2023-01-27 22:06:14,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:14,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:14,641 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] [2023-01-27 22:06:14,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:14,846 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,SelfDestructingSolverStorable9 [2023-01-27 22:06:14,846 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)] === [2023-01-27 22:06:14,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1223895319, now seen corresponding path program 7 times [2023-01-27 22:06:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979543454] [2023-01-27 22:06:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:15,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:15,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979543454] [2023-01-27 22:06:15,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979543454] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:15,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499668474] [2023-01-27 22:06:15,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:06:15,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:15,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:15,238 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) [2023-01-27 22:06:15,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 22:06:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:15,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-27 22:06:15,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:15,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:06:15,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:06:15,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:06:15,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:06:15,689 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-27 22:06:15,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-01-27 22:06:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:15,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:16,540 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (< c_~max2~0 c_~max3~0)) (.cse4 (<= c_~max3~0 c_~max2~0)) (.cse10 (= c_~max1~0 c_~max2~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (<= .cse0 c_~max2~0) (<= .cse0 c_~max3~0) (= .cse0 .cse1) (<= .cse1 c_~max1~0))))) (or .cse4 (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse6 (select .cse5 c_~A~0.offset))) (or (< c_~max3~0 (select .cse5 .cse3)) (= .cse6 c_~max3~0) (<= .cse6 c_~max1~0)))))) (or (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse8 (select .cse7 c_~A~0.offset))) (or (< c_~max3~0 (select .cse7 .cse3)) (<= .cse8 c_~max1~0) (= .cse8 c_~max2~0))))) .cse9) (or (and (or .cse10 .cse9) (or (= c_~max1~0 c_~max3~0) .cse4)) (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (or (< c_~max3~0 (select .cse11 .cse3)) (< c_~max1~0 (select .cse11 c_~A~0.offset)))))) (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse12 (select .cse14 .cse3)) (.cse13 (select .cse14 c_~A~0.offset))) (or (<= .cse12 c_~max3~0) (< c_~max2~0 .cse12) (<= .cse13 c_~max1~0) (= .cse13 c_~max2~0))))) (or (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse16 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse15 (select .cse16 .cse3))) (or (<= .cse15 c_~max3~0) (< c_~max1~0 (select .cse16 c_~A~0.offset)) (< c_~max2~0 .cse15))))) .cse10) (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse17 (select .cse18 .cse3))) (or (<= .cse17 c_~max2~0) (<= .cse17 c_~max3~0) (< c_~max1~0 (select .cse18 c_~A~0.offset)) (= c_~max1~0 .cse17))))))) is different from false [2023-01-27 22:06:16,837 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (= c_~max1~0 c_~max2~0)) (.cse12 (<= c_~max3~0 c_~max2~0)) (.cse15 (< c_~max2~0 c_~max3~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (< c_~max2~0 .cse0) (<= .cse0 c_~max3~0) (= .cse1 c_~max2~0) (<= .cse1 c_~max1~0))))) (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse4 (select .cse6 .cse3)) (.cse5 (select .cse6 c_~A~0.offset))) (or (= .cse4 .cse5) (<= .cse4 c_~max3~0) (<= .cse4 c_~max2~0) (<= .cse5 c_~max1~0))))) (or (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse8 (select .cse7 .cse3))) (or (< c_~max1~0 (select .cse7 c_~A~0.offset)) (< c_~max2~0 .cse8) (<= .cse8 c_~max3~0))))) .cse9) (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse11 (select .cse10 .cse3))) (or (< c_~max1~0 (select .cse10 c_~A~0.offset)) (= c_~max1~0 .cse11) (<= .cse11 c_~max3~0) (<= .cse11 c_~max2~0))))) (or .cse12 (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse14 (select .cse13 c_~A~0.offset))) (or (< c_~max3~0 (select .cse13 .cse3)) (= .cse14 c_~max3~0) (<= .cse14 c_~max1~0)))))) (or (and (or .cse9 .cse15) (or (= c_~max1~0 c_~max3~0) .cse12)) (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (or (< c_~max3~0 (select .cse16 .cse3)) (< c_~max1~0 (select .cse16 c_~A~0.offset)))))) (or .cse15 (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse17 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse18 (select .cse17 c_~A~0.offset))) (or (< c_~max3~0 (select .cse17 .cse3)) (= .cse18 c_~max2~0) (<= .cse18 c_~max1~0)))))))) is different from false [2023-01-27 22:06:17,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:17,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 65 [2023-01-27 22:06:17,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:17,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 764 treesize of output 740 [2023-01-27 22:06:17,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:17,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 350 treesize of output 338 [2023-01-27 22:06:17,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:17,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 167 [2023-01-27 22:06:17,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:17,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 288 [2023-01-27 22:06:18,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:18,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 102 [2023-01-27 22:06:18,492 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 22:06:18,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1161 treesize of output 1100 [2023-01-27 22:06:18,525 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:06:18,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 251 [2023-01-27 22:06:18,540 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 22:06:18,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 505 treesize of output 461 [2023-01-27 22:06:18,560 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 22:06:18,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 461 treesize of output 373 [2023-01-27 22:06:18,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:18,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 69 [2023-01-27 22:06:18,764 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:18,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 828 treesize of output 792 [2023-01-27 22:06:18,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:06:18,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 170 [2023-01-27 22:06:18,805 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:18,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 364 treesize of output 312 [2023-01-27 22:06:18,825 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:18,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 143 [2023-01-27 22:06:19,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:19,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 89 [2023-01-27 22:06:19,078 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:19,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1125 treesize of output 1073 [2023-01-27 22:06:19,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:06:19,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 245 [2023-01-27 22:06:19,153 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:19,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 493 treesize of output 457 [2023-01-27 22:06:19,176 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:19,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 377 [2023-01-27 22:06:19,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:06:19,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2023-01-27 22:06:19,449 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:19,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1083 treesize of output 1039 [2023-01-27 22:06:19,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:06:19,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 103 [2023-01-27 22:06:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:06:19,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 95 [2023-01-27 22:06:19,528 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:06:19,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 97 [2023-01-27 22:06:19,574 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:06:19,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 1 [2023-01-27 22:06:19,582 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:06:19,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 1 [2023-01-27 22:06:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499668474] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:19,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:19,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-01-27 22:06:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555634611] [2023-01-27 22:06:19,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 22:06:19,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 22:06:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=625, Unknown=2, NotChecked=106, Total=870 [2023-01-27 22:06:19,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-27 22:06:19,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 480 transitions, 6284 flow. Second operand has 30 states, 30 states have (on average 71.3) internal successors, (2139), 30 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:19,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:19,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-27 22:06:19,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:22,290 INFO L130 PetriNetUnfolder]: 3560/5525 cut-off events. [2023-01-27 22:06:22,291 INFO L131 PetriNetUnfolder]: For 51022/51022 co-relation queries the response was YES. [2023-01-27 22:06:22,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36297 conditions, 5525 events. 3560/5525 cut-off events. For 51022/51022 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30214 event pairs, 621 based on Foata normal form. 3/5528 useless extension candidates. Maximal degree in co-relation 35998. Up to 4425 conditions per place. [2023-01-27 22:06:22,326 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 382 selfloop transitions, 241 changer transitions 14/637 dead transitions. [2023-01-27 22:06:22,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 637 transitions, 9054 flow [2023-01-27 22:06:22,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 22:06:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 22:06:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1902 transitions. [2023-01-27 22:06:22,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2849438202247191 [2023-01-27 22:06:22,329 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1902 transitions. [2023-01-27 22:06:22,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1902 transitions. [2023-01-27 22:06:22,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:22,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1902 transitions. [2023-01-27 22:06:22,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 76.08) internal successors, (1902), 25 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:22,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:22,336 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:22,336 INFO L175 Difference]: Start difference. First operand has 166 places, 480 transitions, 6284 flow. Second operand 25 states and 1902 transitions. [2023-01-27 22:06:22,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 637 transitions, 9054 flow [2023-01-27 22:06:22,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 637 transitions, 8844 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-01-27 22:06:22,531 INFO L231 Difference]: Finished difference. Result has 194 places, 520 transitions, 7346 flow [2023-01-27 22:06:22,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6074, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7346, PETRI_PLACES=194, PETRI_TRANSITIONS=520} [2023-01-27 22:06:22,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2023-01-27 22:06:22,532 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 520 transitions, 7346 flow [2023-01-27 22:06:22,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 71.3) internal successors, (2139), 30 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:22,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:22,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:22,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:22,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-27 22:06:22,738 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)] === [2023-01-27 22:06:22,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:22,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1545706338, now seen corresponding path program 8 times [2023-01-27 22:06:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:22,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400547850] [2023-01-27 22:06:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:22,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400547850] [2023-01-27 22:06:22,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400547850] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:22,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979641434] [2023-01-27 22:06:22,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:06:22,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:22,832 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) [2023-01-27 22:06:22,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 22:06:22,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:06:22,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:22,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:06:22,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:22,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979641434] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:23,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-01-27 22:06:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527543756] [2023-01-27 22:06:23,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:23,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 22:06:23,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 22:06:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-01-27 22:06:23,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-27 22:06:23,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 520 transitions, 7346 flow. Second operand has 15 states, 15 states have (on average 107.93333333333334) internal successors, (1619), 15 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:23,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:23,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-27 22:06:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:23,955 INFO L130 PetriNetUnfolder]: 3915/6206 cut-off events. [2023-01-27 22:06:23,956 INFO L131 PetriNetUnfolder]: For 71329/71844 co-relation queries the response was YES. [2023-01-27 22:06:23,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43063 conditions, 6206 events. 3915/6206 cut-off events. For 71329/71844 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37038 event pairs, 1251 based on Foata normal form. 354/6429 useless extension candidates. Maximal degree in co-relation 42767. Up to 4058 conditions per place. [2023-01-27 22:06:23,997 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 561 selfloop transitions, 60 changer transitions 2/658 dead transitions. [2023-01-27 22:06:23,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 658 transitions, 10107 flow [2023-01-27 22:06:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:06:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:06:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2023-01-27 22:06:23,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803638309256287 [2023-01-27 22:06:23,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2023-01-27 22:06:23,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2023-01-27 22:06:23,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:23,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2023-01-27 22:06:24,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:24,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:24,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:24,001 INFO L175 Difference]: Start difference. First operand has 194 places, 520 transitions, 7346 flow. Second operand 7 states and 800 transitions. [2023-01-27 22:06:24,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 658 transitions, 10107 flow [2023-01-27 22:06:24,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 658 transitions, 9731 flow, removed 109 selfloop flow, removed 16 redundant places. [2023-01-27 22:06:24,211 INFO L231 Difference]: Finished difference. Result has 187 places, 526 transitions, 7357 flow [2023-01-27 22:06:24,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7357, PETRI_PLACES=187, PETRI_TRANSITIONS=526} [2023-01-27 22:06:24,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2023-01-27 22:06:24,212 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 526 transitions, 7357 flow [2023-01-27 22:06:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.93333333333334) internal successors, (1619), 15 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:24,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:24,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:24,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:24,422 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,SelfDestructingSolverStorable11 [2023-01-27 22:06:24,422 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)] === [2023-01-27 22:06:24,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 235402435, now seen corresponding path program 1 times [2023-01-27 22:06:24,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722367537] [2023-01-27 22:06:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:24,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722367537] [2023-01-27 22:06:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722367537] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029068489] [2023-01-27 22:06:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:24,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:24,498 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) [2023-01-27 22:06:24,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 22:06:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:24,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:06:24,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:24,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029068489] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:24,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-27 22:06:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883896597] [2023-01-27 22:06:24,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:06:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:06:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:06:24,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:06:24,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 526 transitions, 7357 flow. Second operand has 16 states, 16 states have (on average 100.4375) internal successors, (1607), 16 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:24,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:24,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:06:24,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:26,148 INFO L130 PetriNetUnfolder]: 4440/6912 cut-off events. [2023-01-27 22:06:26,149 INFO L131 PetriNetUnfolder]: For 80768/80783 co-relation queries the response was YES. [2023-01-27 22:06:26,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48762 conditions, 6912 events. 4440/6912 cut-off events. For 80768/80783 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40385 event pairs, 676 based on Foata normal form. 27/6931 useless extension candidates. Maximal degree in co-relation 48504. Up to 2393 conditions per place. [2023-01-27 22:06:26,191 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 643 selfloop transitions, 129 changer transitions 24/812 dead transitions. [2023-01-27 22:06:26,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 812 transitions, 12316 flow [2023-01-27 22:06:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 22:06:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 22:06:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1292 transitions. [2023-01-27 22:06:26,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40324594257178525 [2023-01-27 22:06:26,193 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1292 transitions. [2023-01-27 22:06:26,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1292 transitions. [2023-01-27 22:06:26,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:26,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1292 transitions. [2023-01-27 22:06:26,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.66666666666667) internal successors, (1292), 12 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:26,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:26,197 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:26,197 INFO L175 Difference]: Start difference. First operand has 187 places, 526 transitions, 7357 flow. Second operand 12 states and 1292 transitions. [2023-01-27 22:06:26,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 812 transitions, 12316 flow [2023-01-27 22:06:26,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 812 transitions, 12197 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-01-27 22:06:26,464 INFO L231 Difference]: Finished difference. Result has 198 places, 555 transitions, 8118 flow [2023-01-27 22:06:26,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8118, PETRI_PLACES=198, PETRI_TRANSITIONS=555} [2023-01-27 22:06:26,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2023-01-27 22:06:26,465 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 555 transitions, 8118 flow [2023-01-27 22:06:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 100.4375) internal successors, (1607), 16 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:26,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:26,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:26,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-27 22:06:26,670 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,SelfDestructingSolverStorable12 [2023-01-27 22:06:26,670 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)] === [2023-01-27 22:06:26,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1171800201, now seen corresponding path program 9 times [2023-01-27 22:06:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412118759] [2023-01-27 22:06:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:26,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:26,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412118759] [2023-01-27 22:06:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412118759] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:26,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396093205] [2023-01-27 22:06:26,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:06:26,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:26,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:26,773 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) [2023-01-27 22:06:26,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 22:06:26,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:06:26,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:26,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 22:06:26,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:26,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396093205] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:27,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:27,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 22:06:27,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390116302] [2023-01-27 22:06:27,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 22:06:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 22:06:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-27 22:06:27,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 267 [2023-01-27 22:06:27,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 555 transitions, 8118 flow. Second operand has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:27,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:27,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 267 [2023-01-27 22:06:27,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:28,247 INFO L130 PetriNetUnfolder]: 3515/5725 cut-off events. [2023-01-27 22:06:28,247 INFO L131 PetriNetUnfolder]: For 85643/85990 co-relation queries the response was YES. [2023-01-27 22:06:28,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42734 conditions, 5725 events. 3515/5725 cut-off events. For 85643/85990 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 35373 event pairs, 652 based on Foata normal form. 452/6076 useless extension candidates. Maximal degree in co-relation 42659. Up to 2193 conditions per place. [2023-01-27 22:06:28,283 INFO L137 encePairwiseOnDemand]: 261/267 looper letters, 463 selfloop transitions, 100 changer transitions 24/623 dead transitions. [2023-01-27 22:06:28,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 623 transitions, 9997 flow [2023-01-27 22:06:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 22:06:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 22:06:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 880 transitions. [2023-01-27 22:06:28,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41198501872659177 [2023-01-27 22:06:28,286 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 880 transitions. [2023-01-27 22:06:28,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 880 transitions. [2023-01-27 22:06:28,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:28,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 880 transitions. [2023-01-27 22:06:28,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:28,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:28,288 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:28,288 INFO L175 Difference]: Start difference. First operand has 198 places, 555 transitions, 8118 flow. Second operand 8 states and 880 transitions. [2023-01-27 22:06:28,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 623 transitions, 9997 flow [2023-01-27 22:06:28,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 623 transitions, 9887 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-01-27 22:06:28,554 INFO L231 Difference]: Finished difference. Result has 201 places, 507 transitions, 7805 flow [2023-01-27 22:06:28,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7344, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7805, PETRI_PLACES=201, PETRI_TRANSITIONS=507} [2023-01-27 22:06:28,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2023-01-27 22:06:28,555 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 507 transitions, 7805 flow [2023-01-27 22:06:28,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:28,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:28,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:28,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:28,756 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,SelfDestructingSolverStorable13 [2023-01-27 22:06:28,756 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)] === [2023-01-27 22:06:28,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1746206957, now seen corresponding path program 2 times [2023-01-27 22:06:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658690596] [2023-01-27 22:06:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658690596] [2023-01-27 22:06:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658690596] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702656870] [2023-01-27 22:06:28,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:06:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:28,854 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) [2023-01-27 22:06:28,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 22:06:28,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:06:28,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:28,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 22:06:28,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:06:29,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:06:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702656870] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:29,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-27 22:06:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818268233] [2023-01-27 22:06:29,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:29,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:06:29,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:06:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:06:29,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:06:29,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 507 transitions, 7805 flow. Second operand has 16 states, 16 states have (on average 101.6875) internal successors, (1627), 16 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:29,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:29,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:06:29,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:30,323 INFO L130 PetriNetUnfolder]: 3288/5506 cut-off events. [2023-01-27 22:06:30,324 INFO L131 PetriNetUnfolder]: For 86840/86862 co-relation queries the response was YES. [2023-01-27 22:06:30,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40639 conditions, 5506 events. 3288/5506 cut-off events. For 86840/86862 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 35048 event pairs, 375 based on Foata normal form. 375/5869 useless extension candidates. Maximal degree in co-relation 40562. Up to 2157 conditions per place. [2023-01-27 22:06:30,355 INFO L137 encePairwiseOnDemand]: 258/267 looper letters, 516 selfloop transitions, 88 changer transitions 22/640 dead transitions. [2023-01-27 22:06:30,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 640 transitions, 10206 flow [2023-01-27 22:06:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 22:06:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 22:06:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1283 transitions. [2023-01-27 22:06:30,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004369538077403 [2023-01-27 22:06:30,356 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1283 transitions. [2023-01-27 22:06:30,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1283 transitions. [2023-01-27 22:06:30,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:30,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1283 transitions. [2023-01-27 22:06:30,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 106.91666666666667) internal successors, (1283), 12 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:30,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:30,360 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:30,360 INFO L175 Difference]: Start difference. First operand has 201 places, 507 transitions, 7805 flow. Second operand 12 states and 1283 transitions. [2023-01-27 22:06:30,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 640 transitions, 10206 flow [2023-01-27 22:06:30,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 640 transitions, 9948 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-01-27 22:06:30,632 INFO L231 Difference]: Finished difference. Result has 205 places, 433 transitions, 6658 flow [2023-01-27 22:06:30,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6171, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6658, PETRI_PLACES=205, PETRI_TRANSITIONS=433} [2023-01-27 22:06:30,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2023-01-27 22:06:30,632 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 433 transitions, 6658 flow [2023-01-27 22:06:30,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 101.6875) internal successors, (1627), 16 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:30,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:30,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:30,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-27 22:06:30,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:30,833 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)] === [2023-01-27 22:06:30,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1869947944, now seen corresponding path program 10 times [2023-01-27 22:06:30,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:30,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464493935] [2023-01-27 22:06:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:30,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:30,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464493935] [2023-01-27 22:06:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464493935] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329930871] [2023-01-27 22:06:30,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:06:30,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:30,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:30,965 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) [2023-01-27 22:06:30,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 22:06:31,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:06:31,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:31,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:06:31,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:31,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:06:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329930871] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:31,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:31,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 18 [2023-01-27 22:06:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301371892] [2023-01-27 22:06:31,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:31,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:06:31,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:31,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:06:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:06:31,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-27 22:06:31,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 433 transitions, 6658 flow. Second operand has 18 states, 18 states have (on average 98.05555555555556) internal successors, (1765), 18 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:31,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:31,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-27 22:06:31,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:32,773 INFO L130 PetriNetUnfolder]: 2952/5043 cut-off events. [2023-01-27 22:06:32,774 INFO L131 PetriNetUnfolder]: For 86108/86108 co-relation queries the response was YES. [2023-01-27 22:06:32,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39011 conditions, 5043 events. 2952/5043 cut-off events. For 86108/86108 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31331 event pairs, 377 based on Foata normal form. 270/5313 useless extension candidates. Maximal degree in co-relation 38935. Up to 1916 conditions per place. [2023-01-27 22:06:32,803 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 363 selfloop transitions, 170 changer transitions 198/731 dead transitions. [2023-01-27 22:06:32,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 731 transitions, 11840 flow [2023-01-27 22:06:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 22:06:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 22:06:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3394 transitions. [2023-01-27 22:06:32,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38520031778458746 [2023-01-27 22:06:32,806 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3394 transitions. [2023-01-27 22:06:32,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3394 transitions. [2023-01-27 22:06:32,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:32,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3394 transitions. [2023-01-27 22:06:32,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 102.84848484848484) internal successors, (3394), 33 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:32,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 267.0) internal successors, (9078), 34 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:32,815 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 267.0) internal successors, (9078), 34 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:32,815 INFO L175 Difference]: Start difference. First operand has 205 places, 433 transitions, 6658 flow. Second operand 33 states and 3394 transitions. [2023-01-27 22:06:32,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 731 transitions, 11840 flow [2023-01-27 22:06:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 731 transitions, 11216 flow, removed 162 selfloop flow, removed 12 redundant places. [2023-01-27 22:06:33,050 INFO L231 Difference]: Finished difference. Result has 245 places, 334 transitions, 5276 flow [2023-01-27 22:06:33,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5276, PETRI_PLACES=245, PETRI_TRANSITIONS=334} [2023-01-27 22:06:33,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2023-01-27 22:06:33,051 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 334 transitions, 5276 flow [2023-01-27 22:06:33,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 98.05555555555556) internal successors, (1765), 18 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:33,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:33,051 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] [2023-01-27 22:06:33,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:33,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-27 22:06:33,256 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)] === [2023-01-27 22:06:33,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -587102579, now seen corresponding path program 11 times [2023-01-27 22:06:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479919912] [2023-01-27 22:06:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:33,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479919912] [2023-01-27 22:06:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479919912] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:33,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799224463] [2023-01-27 22:06:33,358 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:06:33,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:33,359 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) [2023-01-27 22:06:33,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 22:06:33,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:06:33,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:33,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:06:33,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:33,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:33,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799224463] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:33,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:33,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-27 22:06:33,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469285959] [2023-01-27 22:06:33,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:33,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 22:06:33,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:33,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 22:06:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-01-27 22:06:33,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-27 22:06:33,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 334 transitions, 5276 flow. Second operand has 23 states, 23 states have (on average 97.34782608695652) internal successors, (2239), 23 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:33,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:33,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-27 22:06:33,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:36,751 INFO L130 PetriNetUnfolder]: 4415/7060 cut-off events. [2023-01-27 22:06:36,751 INFO L131 PetriNetUnfolder]: For 192078/192078 co-relation queries the response was YES. [2023-01-27 22:06:36,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65772 conditions, 7060 events. 4415/7060 cut-off events. For 192078/192078 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 41745 event pairs, 520 based on Foata normal form. 72/7132 useless extension candidates. Maximal degree in co-relation 65681. Up to 2588 conditions per place. [2023-01-27 22:06:36,819 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 614 selfloop transitions, 473 changer transitions 0/1087 dead transitions. [2023-01-27 22:06:36,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1087 transitions, 18766 flow [2023-01-27 22:06:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-01-27 22:06:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-01-27 22:06:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 5602 transitions. [2023-01-27 22:06:36,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38854210015258706 [2023-01-27 22:06:36,825 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 5602 transitions. [2023-01-27 22:06:36,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 5602 transitions. [2023-01-27 22:06:36,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:36,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 5602 transitions. [2023-01-27 22:06:36,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 103.74074074074075) internal successors, (5602), 54 states have internal predecessors, (5602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:36,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 267.0) internal successors, (14685), 55 states have internal predecessors, (14685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:36,841 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 267.0) internal successors, (14685), 55 states have internal predecessors, (14685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:36,841 INFO L175 Difference]: Start difference. First operand has 245 places, 334 transitions, 5276 flow. Second operand 54 states and 5602 transitions. [2023-01-27 22:06:36,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1087 transitions, 18766 flow [2023-01-27 22:06:37,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1087 transitions, 14463 flow, removed 1773 selfloop flow, removed 27 redundant places. [2023-01-27 22:06:37,842 INFO L231 Difference]: Finished difference. Result has 268 places, 697 transitions, 11425 flow [2023-01-27 22:06:37,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=11425, PETRI_PLACES=268, PETRI_TRANSITIONS=697} [2023-01-27 22:06:37,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2023-01-27 22:06:37,843 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 697 transitions, 11425 flow [2023-01-27 22:06:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.34782608695652) internal successors, (2239), 23 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:37,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:37,844 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] [2023-01-27 22:06:37,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 22:06:38,044 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)] === [2023-01-27 22:06:38,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 83929249, now seen corresponding path program 12 times [2023-01-27 22:06:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006975281] [2023-01-27 22:06:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:38,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006975281] [2023-01-27 22:06:38,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006975281] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447296027] [2023-01-27 22:06:38,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:06:38,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:38,160 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) [2023-01-27 22:06:38,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 22:06:38,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:06:38,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:38,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:06:38,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:38,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447296027] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:38,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:38,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-27 22:06:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725739536] [2023-01-27 22:06:38,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 22:06:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 22:06:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-27 22:06:38,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:06:38,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 697 transitions, 11425 flow. Second operand has 21 states, 21 states have (on average 99.95238095238095) internal successors, (2099), 21 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:38,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:38,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:06:38,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:40,708 INFO L130 PetriNetUnfolder]: 5724/9308 cut-off events. [2023-01-27 22:06:40,708 INFO L131 PetriNetUnfolder]: For 263685/263693 co-relation queries the response was YES. [2023-01-27 22:06:40,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84754 conditions, 9308 events. 5724/9308 cut-off events. For 263685/263693 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60197 event pairs, 862 based on Foata normal form. 74/9380 useless extension candidates. Maximal degree in co-relation 84645. Up to 4312 conditions per place. [2023-01-27 22:06:40,793 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 691 selfloop transitions, 307 changer transitions 0/1020 dead transitions. [2023-01-27 22:06:40,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1020 transitions, 18796 flow [2023-01-27 22:06:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 22:06:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 22:06:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1487 transitions. [2023-01-27 22:06:40,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39780631353665064 [2023-01-27 22:06:40,795 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1487 transitions. [2023-01-27 22:06:40,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1487 transitions. [2023-01-27 22:06:40,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:40,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1487 transitions. [2023-01-27 22:06:40,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.21428571428571) internal successors, (1487), 14 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:40,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:40,799 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:40,799 INFO L175 Difference]: Start difference. First operand has 268 places, 697 transitions, 11425 flow. Second operand 14 states and 1487 transitions. [2023-01-27 22:06:40,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1020 transitions, 18796 flow [2023-01-27 22:06:42,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1020 transitions, 15031 flow, removed 1689 selfloop flow, removed 10 redundant places. [2023-01-27 22:06:42,690 INFO L231 Difference]: Finished difference. Result has 277 places, 844 transitions, 11943 flow [2023-01-27 22:06:42,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8690, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11943, PETRI_PLACES=277, PETRI_TRANSITIONS=844} [2023-01-27 22:06:42,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-01-27 22:06:42,691 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 844 transitions, 11943 flow [2023-01-27 22:06:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.95238095238095) internal successors, (2099), 21 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:42,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:42,692 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] [2023-01-27 22:06:42,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:42,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 22:06:42,892 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)] === [2023-01-27 22:06:42,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:42,892 INFO L85 PathProgramCache]: Analyzing trace with hash 18824553, now seen corresponding path program 13 times [2023-01-27 22:06:42,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976626942] [2023-01-27 22:06:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976626942] [2023-01-27 22:06:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976626942] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846440745] [2023-01-27 22:06:43,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:06:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:43,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:43,004 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) [2023-01-27 22:06:43,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 22:06:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:43,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:06:43,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:43,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846440745] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:43,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:43,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-27 22:06:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090215645] [2023-01-27 22:06:43,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:06:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:06:43,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:06:43,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:06:43,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 844 transitions, 11943 flow. Second operand has 19 states, 19 states have (on average 100.05263157894737) internal successors, (1901), 19 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:43,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:43,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:06:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:45,621 INFO L130 PetriNetUnfolder]: 5730/9296 cut-off events. [2023-01-27 22:06:45,621 INFO L131 PetriNetUnfolder]: For 207516/207536 co-relation queries the response was YES. [2023-01-27 22:06:45,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76604 conditions, 9296 events. 5730/9296 cut-off events. For 207516/207536 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 59730 event pairs, 932 based on Foata normal form. 132/9421 useless extension candidates. Maximal degree in co-relation 76493. Up to 4517 conditions per place. [2023-01-27 22:06:45,728 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 755 selfloop transitions, 248 changer transitions 0/1025 dead transitions. [2023-01-27 22:06:45,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1025 transitions, 16678 flow [2023-01-27 22:06:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:06:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:06:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-01-27 22:06:45,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953391593841032 [2023-01-27 22:06:45,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-01-27 22:06:45,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-01-27 22:06:45,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:45,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-01-27 22:06:45,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:45,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:45,733 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:45,733 INFO L175 Difference]: Start difference. First operand has 277 places, 844 transitions, 11943 flow. Second operand 9 states and 950 transitions. [2023-01-27 22:06:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1025 transitions, 16678 flow [2023-01-27 22:06:47,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1025 transitions, 16015 flow, removed 229 selfloop flow, removed 5 redundant places. [2023-01-27 22:06:47,075 INFO L231 Difference]: Finished difference. Result has 275 places, 855 transitions, 12611 flow [2023-01-27 22:06:47,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=11155, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12611, PETRI_PLACES=275, PETRI_TRANSITIONS=855} [2023-01-27 22:06:47,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-01-27 22:06:47,076 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 855 transitions, 12611 flow [2023-01-27 22:06:47,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.05263157894737) internal successors, (1901), 19 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:47,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:47,076 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] [2023-01-27 22:06:47,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:47,281 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)] === [2023-01-27 22:06:47,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 725112289, now seen corresponding path program 14 times [2023-01-27 22:06:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071975539] [2023-01-27 22:06:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:47,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071975539] [2023-01-27 22:06:47,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071975539] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683191298] [2023-01-27 22:06:47,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:06:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:47,385 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:06:47,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 22:06:47,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:06:47,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:47,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:06:47,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:47,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:47,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683191298] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:47,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:47,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-01-27 22:06:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194803213] [2023-01-27 22:06:47,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 22:06:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 22:06:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-01-27 22:06:47,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:06:47,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 855 transitions, 12611 flow. Second operand has 22 states, 22 states have (on average 99.81818181818181) internal successors, (2196), 22 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:47,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:47,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:06:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:49,974 INFO L130 PetriNetUnfolder]: 5626/9058 cut-off events. [2023-01-27 22:06:49,974 INFO L131 PetriNetUnfolder]: For 195468/195478 co-relation queries the response was YES. [2023-01-27 22:06:50,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75314 conditions, 9058 events. 5626/9058 cut-off events. For 195468/195478 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 57225 event pairs, 880 based on Foata normal form. 92/9148 useless extension candidates. Maximal degree in co-relation 75201. Up to 4313 conditions per place. [2023-01-27 22:06:50,067 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 632 selfloop transitions, 311 changer transitions 0/965 dead transitions. [2023-01-27 22:06:50,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 965 transitions, 15996 flow [2023-01-27 22:06:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 22:06:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 22:06:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1063 transitions. [2023-01-27 22:06:50,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39812734082397006 [2023-01-27 22:06:50,069 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1063 transitions. [2023-01-27 22:06:50,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1063 transitions. [2023-01-27 22:06:50,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:50,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1063 transitions. [2023-01-27 22:06:50,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.3) internal successors, (1063), 10 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:50,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:50,071 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:50,071 INFO L175 Difference]: Start difference. First operand has 275 places, 855 transitions, 12611 flow. Second operand 10 states and 1063 transitions. [2023-01-27 22:06:50,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 965 transitions, 15996 flow [2023-01-27 22:06:51,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 965 transitions, 15687 flow, removed 86 selfloop flow, removed 6 redundant places. [2023-01-27 22:06:51,329 INFO L231 Difference]: Finished difference. Result has 277 places, 854 transitions, 12905 flow [2023-01-27 22:06:51,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=12283, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12905, PETRI_PLACES=277, PETRI_TRANSITIONS=854} [2023-01-27 22:06:51,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-01-27 22:06:51,330 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 854 transitions, 12905 flow [2023-01-27 22:06:51,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 99.81818181818181) internal successors, (2196), 22 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:51,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:51,330 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] [2023-01-27 22:06:51,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:51,530 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)] === [2023-01-27 22:06:51,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1285888269, now seen corresponding path program 15 times [2023-01-27 22:06:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:51,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115258339] [2023-01-27 22:06:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:51,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:51,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115258339] [2023-01-27 22:06:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115258339] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:51,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530692259] [2023-01-27 22:06:51,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:06:51,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:51,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:51,638 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:06:51,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 22:06:51,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:06:51,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:51,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:06:51,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:51,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530692259] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:51,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:51,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-27 22:06:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880497841] [2023-01-27 22:06:51,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:51,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:06:51,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:06:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:06:51,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:06:51,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 854 transitions, 12905 flow. Second operand has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:51,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:51,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:06:51,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:53,953 INFO L130 PetriNetUnfolder]: 5534/8828 cut-off events. [2023-01-27 22:06:53,953 INFO L131 PetriNetUnfolder]: For 194917/194929 co-relation queries the response was YES. [2023-01-27 22:06:54,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73845 conditions, 8828 events. 5534/8828 cut-off events. For 194917/194929 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 54579 event pairs, 938 based on Foata normal form. 78/8901 useless extension candidates. Maximal degree in co-relation 73734. Up to 4517 conditions per place. [2023-01-27 22:06:54,045 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 704 selfloop transitions, 225 changer transitions 0/951 dead transitions. [2023-01-27 22:06:54,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 951 transitions, 16062 flow [2023-01-27 22:06:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:06:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:06:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-01-27 22:06:54,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953391593841032 [2023-01-27 22:06:54,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-01-27 22:06:54,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-01-27 22:06:54,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:54,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-01-27 22:06:54,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:54,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:54,050 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:54,050 INFO L175 Difference]: Start difference. First operand has 277 places, 854 transitions, 12905 flow. Second operand 9 states and 950 transitions. [2023-01-27 22:06:54,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 951 transitions, 16062 flow [2023-01-27 22:06:55,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 951 transitions, 15390 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-01-27 22:06:55,196 INFO L231 Difference]: Finished difference. Result has 277 places, 864 transitions, 12898 flow [2023-01-27 22:06:55,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=12109, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12898, PETRI_PLACES=277, PETRI_TRANSITIONS=864} [2023-01-27 22:06:55,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-01-27 22:06:55,197 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 864 transitions, 12898 flow [2023-01-27 22:06:55,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:55,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:55,197 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] [2023-01-27 22:06:55,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:55,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-27 22:06:55,398 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)] === [2023-01-27 22:06:55,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash 202816105, now seen corresponding path program 16 times [2023-01-27 22:06:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684054521] [2023-01-27 22:06:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684054521] [2023-01-27 22:06:55,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684054521] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:55,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685759293] [2023-01-27 22:06:55,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:06:55,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:55,501 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:06:55,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-27 22:06:55,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:06:55,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:55,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:06:55,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:55,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:06:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:55,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685759293] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:55,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:55,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-01-27 22:06:55,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518064824] [2023-01-27 22:06:55,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:55,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:06:55,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:55,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:06:55,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:06:55,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-27 22:06:55,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 864 transitions, 12898 flow. Second operand has 18 states, 18 states have (on average 97.61111111111111) internal successors, (1757), 18 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:55,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:55,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-27 22:06:55,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:58,615 INFO L130 PetriNetUnfolder]: 7040/11245 cut-off events. [2023-01-27 22:06:58,615 INFO L131 PetriNetUnfolder]: For 267989/267989 co-relation queries the response was YES. [2023-01-27 22:06:58,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96248 conditions, 11245 events. 7040/11245 cut-off events. For 267989/267989 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 72420 event pairs, 579 based on Foata normal form. 90/11335 useless extension candidates. Maximal degree in co-relation 96136. Up to 4318 conditions per place. [2023-01-27 22:06:58,738 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 655 selfloop transitions, 559 changer transitions 0/1214 dead transitions. [2023-01-27 22:06:58,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1214 transitions, 21315 flow [2023-01-27 22:06:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 22:06:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 22:06:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1940 transitions. [2023-01-27 22:06:58,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824167159471713 [2023-01-27 22:06:58,740 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1940 transitions. [2023-01-27 22:06:58,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1940 transitions. [2023-01-27 22:06:58,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:58,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1940 transitions. [2023-01-27 22:06:58,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 102.10526315789474) internal successors, (1940), 19 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:58,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:58,745 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:06:58,745 INFO L175 Difference]: Start difference. First operand has 277 places, 864 transitions, 12898 flow. Second operand 19 states and 1940 transitions. [2023-01-27 22:06:58,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1214 transitions, 21315 flow [2023-01-27 22:07:00,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1214 transitions, 20975 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-01-27 22:07:00,391 INFO L231 Difference]: Finished difference. Result has 298 places, 971 transitions, 16394 flow [2023-01-27 22:07:00,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=12637, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16394, PETRI_PLACES=298, PETRI_TRANSITIONS=971} [2023-01-27 22:07:00,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2023-01-27 22:07:00,391 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 971 transitions, 16394 flow [2023-01-27 22:07:00,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.61111111111111) internal successors, (1757), 18 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:00,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:07:00,392 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] [2023-01-27 22:07:00,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-27 22:07:00,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-27 22:07:00,596 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:07:00,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:07:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2030424355, now seen corresponding path program 17 times [2023-01-27 22:07:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:07:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151729631] [2023-01-27 22:07:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:07:00,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:07:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:07:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:07:00,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:07:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151729631] [2023-01-27 22:07:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151729631] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:07:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110726521] [2023-01-27 22:07:00,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:07:00,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:07:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:07:00,692 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:07:00,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-27 22:07:00,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:07:00,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:07:00,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:07:00,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:07:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:07:00,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:07:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:07:00,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110726521] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:07:00,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:07:00,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-01-27 22:07:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877708378] [2023-01-27 22:07:00,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:07:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:07:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:07:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:07:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:07:00,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-27 22:07:00,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 971 transitions, 16394 flow. Second operand has 20 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:00,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:07:00,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-27 22:07:00,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:07:04,999 INFO L130 PetriNetUnfolder]: 7899/12524 cut-off events. [2023-01-27 22:07:05,000 INFO L131 PetriNetUnfolder]: For 344416/344416 co-relation queries the response was YES. [2023-01-27 22:07:05,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114547 conditions, 12524 events. 7899/12524 cut-off events. For 344416/344416 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 80917 event pairs, 519 based on Foata normal form. 138/12662 useless extension candidates. Maximal degree in co-relation 114426. Up to 4890 conditions per place. [2023-01-27 22:07:05,161 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 684 selfloop transitions, 749 changer transitions 0/1433 dead transitions. [2023-01-27 22:07:05,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 1433 transitions, 27234 flow [2023-01-27 22:07:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-27 22:07:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-27 22:07:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3777 transitions. [2023-01-27 22:07:05,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823261463710902 [2023-01-27 22:07:05,164 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3777 transitions. [2023-01-27 22:07:05,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3777 transitions. [2023-01-27 22:07:05,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:07:05,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3777 transitions. [2023-01-27 22:07:05,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 102.08108108108108) internal successors, (3777), 37 states have internal predecessors, (3777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:05,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 267.0) internal successors, (10146), 38 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:05,172 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 267.0) internal successors, (10146), 38 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:05,172 INFO L175 Difference]: Start difference. First operand has 298 places, 971 transitions, 16394 flow. Second operand 37 states and 3777 transitions. [2023-01-27 22:07:05,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 1433 transitions, 27234 flow [2023-01-27 22:07:07,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1433 transitions, 26536 flow, removed 327 selfloop flow, removed 5 redundant places. [2023-01-27 22:07:07,950 INFO L231 Difference]: Finished difference. Result has 335 places, 1110 transitions, 21100 flow [2023-01-27 22:07:07,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=15764, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=623, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21100, PETRI_PLACES=335, PETRI_TRANSITIONS=1110} [2023-01-27 22:07:07,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2023-01-27 22:07:07,951 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 1110 transitions, 21100 flow [2023-01-27 22:07:07,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:07,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:07:07,952 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] [2023-01-27 22:07:07,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-01-27 22:07:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:07:08,156 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:07:08,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:07:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1869960955, now seen corresponding path program 18 times [2023-01-27 22:07:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:07:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302336793] [2023-01-27 22:07:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:07:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:07:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:07:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:07:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:07:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302336793] [2023-01-27 22:07:08,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302336793] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:07:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077378339] [2023-01-27 22:07:08,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:07:08,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:07:08,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:07:08,263 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:07:08,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-27 22:07:08,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:07:08,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:07:08,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:07:08,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:07:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:07:08,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:07:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:07:08,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077378339] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:07:08,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:07:08,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-27 22:07:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897827563] [2023-01-27 22:07:08,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:07:08,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:07:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:07:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:07:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:07:08,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:07:08,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1110 transitions, 21100 flow. Second operand has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:08,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:07:08,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:07:08,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:07:12,398 INFO L130 PetriNetUnfolder]: 7761/12310 cut-off events. [2023-01-27 22:07:12,398 INFO L131 PetriNetUnfolder]: For 360996/361012 co-relation queries the response was YES. [2023-01-27 22:07:12,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117696 conditions, 12310 events. 7761/12310 cut-off events. For 360996/361012 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 79219 event pairs, 2104 based on Foata normal form. 54/12357 useless extension candidates. Maximal degree in co-relation 117567. Up to 10566 conditions per place. [2023-01-27 22:07:12,535 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 873 selfloop transitions, 260 changer transitions 0/1169 dead transitions. [2023-01-27 22:07:12,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1169 transitions, 23929 flow [2023-01-27 22:07:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:07:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:07:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 943 transitions. [2023-01-27 22:07:12,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924261339991677 [2023-01-27 22:07:12,536 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 943 transitions. [2023-01-27 22:07:12,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 943 transitions. [2023-01-27 22:07:12,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:07:12,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 943 transitions. [2023-01-27 22:07:12,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.77777777777777) internal successors, (943), 9 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:12,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:12,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:12,538 INFO L175 Difference]: Start difference. First operand has 335 places, 1110 transitions, 21100 flow. Second operand 9 states and 943 transitions. [2023-01-27 22:07:12,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1169 transitions, 23929 flow [2023-01-27 22:07:15,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 1169 transitions, 22370 flow, removed 467 selfloop flow, removed 12 redundant places. [2023-01-27 22:07:15,347 INFO L231 Difference]: Finished difference. Result has 332 places, 1115 transitions, 20108 flow [2023-01-27 22:07:15,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=19337, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=840, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20108, PETRI_PLACES=332, PETRI_TRANSITIONS=1115} [2023-01-27 22:07:15,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2023-01-27 22:07:15,348 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 1115 transitions, 20108 flow [2023-01-27 22:07:15,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:15,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:07:15,348 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] [2023-01-27 22:07:15,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-27 22:07:15,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:07:15,553 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:07:15,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:07:15,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1125136579, now seen corresponding path program 19 times [2023-01-27 22:07:15,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:07:15,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016086888] [2023-01-27 22:07:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:07:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:07:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:07:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:07:15,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:07:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016086888] [2023-01-27 22:07:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016086888] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:07:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606699937] [2023-01-27 22:07:15,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:07:15,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:07:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:07:15,645 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:07:15,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-27 22:07:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:07:15,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:07:15,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:07:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:07:15,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:07:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:07:15,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606699937] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:07:15,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:07:15,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-27 22:07:15,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134708336] [2023-01-27 22:07:15,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:07:15,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 22:07:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:07:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 22:07:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-01-27 22:07:15,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-27 22:07:15,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 1115 transitions, 20108 flow. Second operand has 21 states, 21 states have (on average 100.19047619047619) internal successors, (2104), 21 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:15,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:07:15,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-27 22:07:15,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:07:19,643 INFO L130 PetriNetUnfolder]: 7702/12151 cut-off events. [2023-01-27 22:07:19,643 INFO L131 PetriNetUnfolder]: For 331261/331277 co-relation queries the response was YES. [2023-01-27 22:07:19,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112838 conditions, 12151 events. 7702/12151 cut-off events. For 331261/331277 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 77734 event pairs, 846 based on Foata normal form. 46/12190 useless extension candidates. Maximal degree in co-relation 112708. Up to 4778 conditions per place. [2023-01-27 22:07:19,778 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 611 selfloop transitions, 691 changer transitions 0/1338 dead transitions. [2023-01-27 22:07:19,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1338 transitions, 25752 flow [2023-01-27 22:07:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 22:07:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 22:07:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1808 transitions. [2023-01-27 22:07:19,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398325622383785 [2023-01-27 22:07:19,780 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1808 transitions. [2023-01-27 22:07:19,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1808 transitions. [2023-01-27 22:07:19,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:07:19,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1808 transitions. [2023-01-27 22:07:19,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 106.3529411764706) internal successors, (1808), 17 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:19,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:19,784 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:19,784 INFO L175 Difference]: Start difference. First operand has 332 places, 1115 transitions, 20108 flow. Second operand 17 states and 1808 transitions. [2023-01-27 22:07:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 1338 transitions, 25752 flow [2023-01-27 22:07:22,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 1338 transitions, 25210 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-01-27 22:07:22,492 INFO L231 Difference]: Finished difference. Result has 340 places, 1127 transitions, 21243 flow [2023-01-27 22:07:22,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=19420, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21243, PETRI_PLACES=340, PETRI_TRANSITIONS=1127} [2023-01-27 22:07:22,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-01-27 22:07:22,493 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 1127 transitions, 21243 flow [2023-01-27 22:07:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 100.19047619047619) internal successors, (2104), 21 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:07:22,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:07:22,494 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] [2023-01-27 22:07:22,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-27 22:07:22,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-27 22:07:22,757 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:07:22,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:07:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash -153554243, now seen corresponding path program 3 times [2023-01-27 22:07:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:07:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664178112] [2023-01-27 22:07:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:07:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:07:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:07:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:07:24,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:07:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664178112] [2023-01-27 22:07:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664178112] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:07:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394687145] [2023-01-27 22:07:24,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:07:24,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:07:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:07:24,119 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:07:24,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-27 22:07:24,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:07:24,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:07:24,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-27 22:07:24,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:07:24,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:07:24,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:07:24,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:07:24,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-27 22:07:24,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:07:24,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-27 22:07:25,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:07:25,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 89 [2023-01-27 22:07:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:07:26,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:07:33,309 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse11 (+ c_~max2~0 1))) (let ((.cse8 (<= c_~max3~0 c_~max2~0)) (.cse7 (= c_~max1~0 c_~max2~0)) (.cse5 (<= .cse11 c_~max3~0)) (.cse4 (= c_~max1~0 c_~max3~0)) (.cse3 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork1_~i~0 4)))) (and (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse0 (select .cse2 c_~A~0.offset))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse1 (select .cse2 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= (+ .cse0 1) .cse1) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse1 c_~max3~0)))) (<= .cse0 c_~max2~0) (< c_~max1~0 (select .cse2 .cse3)) (= c_~max1~0 .cse0))))) (or (and .cse4 .cse5) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (or (< c_~max3~0 (select .cse6 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< c_~max2~0 (select .cse6 c_~A~0.offset)) (< c_~max1~0 (select .cse6 .cse3))))) (and .cse7 .cse8)) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse9 (select .cse12 .cse3))) (or (= .cse9 c_~max2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse10 (select .cse12 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse10 c_~max3~0) (<= .cse11 .cse10)))) (< c_~max2~0 (select .cse12 c_~A~0.offset)) (<= .cse9 c_~max1~0))))) (or .cse8 (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse14 (select .cse13 .cse3))) (or (< c_~max3~0 (select .cse13 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (= .cse14 c_~max3~0) (< c_~max2~0 (select .cse13 c_~A~0.offset)) (<= .cse14 c_~max1~0)))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse15 (select .cse16 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (= c_~max1~0 .cse15) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse15 c_~max3~0) (<= .cse15 c_~max2~0)))) (< c_~max2~0 (select .cse16 c_~A~0.offset)) (< c_~max1~0 (select .cse16 .cse3))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse18 (select .cse20 c_~A~0.offset)) (.cse17 (select .cse20 .cse3))) (or (= .cse17 .cse18) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse19 (select .cse20 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= (+ .cse18 1) .cse19) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse19 c_~max3~0)))) (<= .cse18 c_~max2~0) (<= .cse17 c_~max1~0))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse24 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse21 (select .cse24 c_~A~0.offset)) (.cse23 (select .cse24 .cse3))) (or (<= .cse21 c_~max2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse22 (select .cse24 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (<= .cse22 .cse21) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse22 c_~max3~0) (= .cse23 .cse22)))) (<= .cse23 c_~max1~0))))) (forall ((v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1179 (Array Int Int))) (let ((.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse26 (select .cse25 c_~A~0.offset))) (or (< c_~max3~0 (select .cse25 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (<= (+ .cse26 1) c_~max3~0) (<= .cse26 c_~max2~0) (< c_~max1~0 (select .cse25 .cse3)) (= c_~max1~0 .cse26))))))) (forall ((v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1179 (Array Int Int))) (let ((.cse27 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse28 (select .cse27 c_~A~0.offset)) (.cse29 (select .cse27 .cse3))) (or (< c_~max3~0 (select .cse27 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (<= c_~max3~0 .cse28) (= .cse29 c_~max3~0) (<= .cse28 c_~max2~0) (<= .cse29 c_~max1~0))))))) (forall ((v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1179 (Array Int Int))) (let ((.cse32 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse31 (select .cse32 c_~A~0.offset)) (.cse30 (select .cse32 .cse3))) (or (= .cse30 .cse31) (< c_~max3~0 (select .cse32 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (<= (+ .cse31 1) c_~max3~0) (<= .cse31 c_~max2~0) (<= .cse30 c_~max1~0))))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse33 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse35 (select .cse33 .cse3))) (or (< c_~max2~0 (select .cse33 c_~A~0.offset)) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse34 (select .cse33 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse34 c_~max3~0) (<= .cse34 c_~max2~0) (= .cse35 .cse34)))) (<= .cse35 c_~max1~0))))) (or (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse37 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse36 (select .cse37 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse36 c_~max3~0) (<= .cse11 .cse36) (< c_~max2~0 (select .cse37 c_~A~0.offset)) (< c_~max1~0 (select .cse37 .cse3)))))) .cse7) (or .cse5 (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse39 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse38 (select .cse39 .cse3))) (or (= .cse38 c_~max2~0) (< c_~max3~0 (select .cse39 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< c_~max2~0 (select .cse39 c_~A~0.offset)) (<= .cse38 c_~max1~0)))))) (or .cse4 (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse40 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse41 (select .cse40 c_~A~0.offset))) (or (< c_~max3~0 (select .cse40 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (<= c_~max3~0 .cse41) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse41 c_~max2~0) (< c_~max1~0 (select .cse40 .cse3))))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse44 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse42 (select .cse44 c_~A~0.offset))) (or (<= .cse42 c_~max2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse43 (select .cse44 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (= c_~max1~0 .cse43) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (<= .cse43 .cse42) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse43 c_~max3~0)))) (< c_~max1~0 (select .cse44 .cse3))))))))) is different from false [2023-01-27 22:08:00,211 WARN L222 SmtUtils]: Spent 25.57s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:08:28,405 WARN L222 SmtUtils]: Spent 22.51s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 22:08:37,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:37,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 128 [2023-01-27 22:08:37,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:37,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5759 treesize of output 5499 [2023-01-27 22:08:37,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:37,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 311 [2023-01-27 22:08:37,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:37,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 614 treesize of output 542 [2023-01-27 22:08:37,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:37,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 283 treesize of output 255 [2023-01-27 22:08:39,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:39,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 143 [2023-01-27 22:08:39,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:39,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2999 treesize of output 2851 [2023-01-27 22:08:39,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:39,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 322 treesize of output 286 [2023-01-27 22:08:39,420 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:39,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 279 treesize of output 267 [2023-01-27 22:08:39,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:39,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 343 treesize of output 255 [2023-01-27 22:08:40,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:40,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 102 [2023-01-27 22:08:40,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:40,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:40,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:40,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 144 [2023-01-27 22:08:40,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:40,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 52 [2023-01-27 22:08:41,305 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 95 [2023-01-27 22:08:41,311 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:41,311 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:41,325 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 110 [2023-01-27 22:08:41,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 52 [2023-01-27 22:08:41,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-01-27 22:08:41,579 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:41,579 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:41,600 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-01-27 22:08:41,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 123 [2023-01-27 22:08:41,628 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-01-27 22:08:41,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 43 [2023-01-27 22:08:41,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 94 [2023-01-27 22:08:41,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:41,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:41,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 142 [2023-01-27 22:08:41,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:41,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 52 [2023-01-27 22:08:42,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:42,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-01-27 22:08:42,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,023 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-27 22:08:42,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 126 [2023-01-27 22:08:42,042 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-27 22:08:42,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 49 [2023-01-27 22:08:42,097 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 1 [2023-01-27 22:08:42,118 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 1 [2023-01-27 22:08:42,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:42,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 246 treesize of output 150 [2023-01-27 22:08:42,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,158 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-27 22:08:42,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 215 treesize of output 164 [2023-01-27 22:08:42,185 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-27 22:08:42,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 49 [2023-01-27 22:08:42,216 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 1 [2023-01-27 22:08:42,234 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 1 [2023-01-27 22:08:42,247 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 1 [2023-01-27 22:08:42,260 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 1 [2023-01-27 22:08:42,278 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 1 [2023-01-27 22:08:42,291 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 1 [2023-01-27 22:08:42,308 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 1 [2023-01-27 22:08:42,327 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-01-27 22:08:42,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:42,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 111 [2023-01-27 22:08:42,352 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,352 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,365 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-27 22:08:42,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 117 [2023-01-27 22:08:42,398 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-27 22:08:42,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 49 [2023-01-27 22:08:42,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:42,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 77 [2023-01-27 22:08:42,445 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,445 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:08:42,460 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-27 22:08:42,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 79 [2023-01-27 22:08:42,482 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-27 22:08:42,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2023-01-27 22:08:42,534 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 1 [2023-01-27 22:08:42,554 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 1 [2023-01-27 22:08:42,575 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 1 [2023-01-27 22:08:42,595 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 1 [2023-01-27 22:08:42,618 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 1 [2023-01-27 22:08:42,649 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 1 [2023-01-27 22:08:42,675 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 1 [2023-01-27 22:08:42,693 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 1 [2023-01-27 22:08:42,721 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 1 [2023-01-27 22:08:42,740 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 1 [2023-01-27 22:08:42,765 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 1 [2023-01-27 22:08:42,788 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 22:08:42,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 1 [2023-01-27 22:08:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:08:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394687145] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:08:43,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:08:43,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2023-01-27 22:08:43,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000701135] [2023-01-27 22:08:43,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:08:43,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-01-27 22:08:43,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:08:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-01-27 22:08:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1404, Unknown=10, NotChecked=76, Total=1640 [2023-01-27 22:08:43,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-27 22:08:43,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1127 transitions, 21243 flow. Second operand has 41 states, 41 states have (on average 70.82926829268293) internal successors, (2904), 41 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:08:43,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:08:43,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-27 22:08:43,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:09:18,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:09:20,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:09:24,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:09:45,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:09:52,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:09:55,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:09:57,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:00,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:03,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:05,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:12,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:15,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:34,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:36,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:38,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:41,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:48,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:10:59,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:02,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:11,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:13,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:15,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:18,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:20,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:23,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:28,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:31,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:33,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:40,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:49,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:51,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:11:59,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:02,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:03,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:06,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:08,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:10,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:13,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:15,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:18,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:20,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:31,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:34,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:37,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:39,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:42,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:45,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:48,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:50,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:53,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:55,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:58,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:12:59,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:02,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:03,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:06,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:08,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:11,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:14,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:16,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:18,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:21,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:23,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:26,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:28,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:30,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:33,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:13:34,833 INFO L130 PetriNetUnfolder]: 10193/15998 cut-off events. [2023-01-27 22:13:34,833 INFO L131 PetriNetUnfolder]: For 430356/430356 co-relation queries the response was YES. [2023-01-27 22:13:34,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150803 conditions, 15998 events. 10193/15998 cut-off events. For 430356/430356 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 106003 event pairs, 1005 based on Foata normal form. 9/16007 useless extension candidates. Maximal degree in co-relation 150674. Up to 13202 conditions per place. [2023-01-27 22:13:35,026 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 1367 selfloop transitions, 521 changer transitions 8/1896 dead transitions. [2023-01-27 22:13:35,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 1896 transitions, 37845 flow [2023-01-27 22:13:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-27 22:13:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-27 22:13:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3045 transitions. [2023-01-27 22:13:35,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2924229328723711 [2023-01-27 22:13:35,030 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3045 transitions. [2023-01-27 22:13:35,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3045 transitions. [2023-01-27 22:13:35,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:13:35,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3045 transitions. [2023-01-27 22:13:35,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 78.07692307692308) internal successors, (3045), 39 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:13:35,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 267.0) internal successors, (10680), 40 states have internal predecessors, (10680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:13:35,037 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 267.0) internal successors, (10680), 40 states have internal predecessors, (10680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:13:35,037 INFO L175 Difference]: Start difference. First operand has 340 places, 1127 transitions, 21243 flow. Second operand 39 states and 3045 transitions. [2023-01-27 22:13:35,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 1896 transitions, 37845 flow [2023-01-27 22:13:40,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1896 transitions, 35941 flow, removed 54 selfloop flow, removed 13 redundant places. [2023-01-27 22:13:40,164 INFO L231 Difference]: Finished difference. Result has 391 places, 1581 transitions, 31015 flow [2023-01-27 22:13:40,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=19964, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=31015, PETRI_PLACES=391, PETRI_TRANSITIONS=1581} [2023-01-27 22:13:40,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2023-01-27 22:13:40,165 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 1581 transitions, 31015 flow [2023-01-27 22:13:40,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 70.82926829268293) internal successors, (2904), 41 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:13:40,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:13:40,165 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] [2023-01-27 22:13:40,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-27 22:13:40,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-27 22:13:40,366 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:13:40,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:13:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash -117819345, now seen corresponding path program 4 times [2023-01-27 22:13:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:13:40,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767056562] [2023-01-27 22:13:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:13:40,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:13:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:13:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:13:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:13:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767056562] [2023-01-27 22:13:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767056562] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:13:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935286101] [2023-01-27 22:13:41,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:13:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:13:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:13:41,502 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:13:41,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-27 22:13:41,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:13:41,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:13:41,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 22:13:41,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:13:42,464 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:13:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:13:42,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:13:42,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 73 [2023-01-27 22:13:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:13:42,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:13:46,868 INFO L321 Elim1Store]: treesize reduction 10, result has 98.4 percent of original size [2023-01-27 22:13:46,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 685 treesize of output 943 [2023-01-27 22:14:39,292 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 22:16:40,303 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:17:36,241 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:18:47,065 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:19:02,326 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. Received shutdown request... [2023-01-27 22:19:30,055 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:19:30,056 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:19:30,073 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 22:19:30,075 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 22:19:30,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-27 22:19:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-27 22:19:30,276 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 44ms.. [2023-01-27 22:19:30,277 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 22:19:30,277 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 22:19:30,277 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 22:19:30,278 INFO L445 BasicCegarLoop]: Path program histogram: [19, 4, 2, 1, 1] [2023-01-27 22:19:30,280 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:19:30,280 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:19:30,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:19:30 BasicIcfg [2023-01-27 22:19:30,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:19:30,281 INFO L158 Benchmark]: Toolchain (without parser) took 849788.89ms. Allocated memory was 327.2MB in the beginning and 5.4GB in the end (delta: 5.0GB). Free memory was 275.3MB in the beginning and 2.3GB in the end (delta: -2.0GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-01-27 22:19:30,281 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:19:30,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.96ms. Allocated memory is still 327.2MB. Free memory was 275.0MB in the beginning and 263.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 22:19:30,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.94ms. Allocated memory is still 327.2MB. Free memory was 263.4MB in the beginning and 261.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:19:30,282 INFO L158 Benchmark]: Boogie Preprocessor took 18.61ms. Allocated memory is still 327.2MB. Free memory was 261.6MB in the beginning and 260.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:19:30,282 INFO L158 Benchmark]: RCFGBuilder took 464.92ms. Allocated memory is still 327.2MB. Free memory was 259.9MB in the beginning and 284.5MB in the end (delta: -24.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. [2023-01-27 22:19:30,282 INFO L158 Benchmark]: TraceAbstraction took 849076.31ms. Allocated memory was 327.2MB in the beginning and 5.4GB in the end (delta: 5.0GB). Free memory was 283.8MB in the beginning and 2.3GB in the end (delta: -2.0GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-01-27 22:19:30,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 195.96ms. Allocated memory is still 327.2MB. Free memory was 275.0MB in the beginning and 263.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.94ms. Allocated memory is still 327.2MB. Free memory was 263.4MB in the beginning and 261.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 18.61ms. Allocated memory is still 327.2MB. Free memory was 261.6MB in the beginning and 260.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 464.92ms. Allocated memory is still 327.2MB. Free memory was 259.9MB in the beginning and 284.5MB in the end (delta: -24.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. * TraceAbstraction took 849076.31ms. Allocated memory was 327.2MB in the beginning and 5.4GB in the end (delta: 5.0GB). Free memory was 283.8MB in the beginning and 2.3GB in the end (delta: -2.0GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 130 PlacesBefore, 30 PlacesAfterwards, 132 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 122 TotalNumberOfCompositions, 1523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1404, independent conditional: 0, independent unconditional: 1404, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 717, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 696, independent conditional: 0, independent unconditional: 696, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 717, unknown conditional: 0, unknown unconditional: 717] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 44ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 44ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 44ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 44ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 164 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: 849.0s, OverallIterations: 27, TraceHistogramMax: 2, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 363.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 234 mSolverCounterUnknown, 4419 SdHoareTripleChecker+Valid, 176.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4419 mSDsluCounter, 1017 SdHoareTripleChecker+Invalid, 174.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 788 IncrementalHoareTripleChecker+Unchecked, 881 mSDsCounter, 208 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17170 IncrementalHoareTripleChecker+Invalid, 18400 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 208 mSolverCounterUnsat, 136 mSDtfsCounter, 17170 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1697 GetRequests, 861 SyntacticMatches, 46 SemanticMatches, 790 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 7816 ImplicationChecksByTransitivity, 219.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31015occurred in iteration=26, InterpolantAutomatonStates: 438, 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, 1.0s SatisfiabilityAnalysisTime, 123.4s InterpolantComputationTime, 1214 NumberOfCodeBlocks, 1197 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 1714 ConstructedInterpolants, 38 QuantifiedInterpolants, 44934 SizeOfPredicates, 263 NumberOfNonLiveVariables, 5353 ConjunctsInSsa, 471 ConjunctsInUnsatCore, 75 InterpolantComputations, 4 PerfectInterpolantSequences, 161/358 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown