/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/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:59:18,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:59:18,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:59:18,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:59:18,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:59:18,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:59:18,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:59:18,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:59:18,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:59:18,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:59:18,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:59:18,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:59:18,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:59:18,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:59:18,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:59:18,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:59:18,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:59:18,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:59:18,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:59:18,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:59:18,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:59:18,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:59:18,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:59:18,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:59:18,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:59:18,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:59:18,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:59:18,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:59:18,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:59:18,170 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:59:18,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:59:18,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:59:18,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:59:18,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:59:18,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:59:18,172 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:59:18,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:59:18,172 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:59:18,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:59:18,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:59:18,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:59:18,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:59:18,174 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:59:18,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:59:18,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:59:18,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:59:18,350 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:59:18,350 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:59:18,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-01-27 19:59:19,376 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:59:19,536 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:59:19,537 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-01-27 19:59:19,541 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d9fc0be/9b4a50cb96c945cb80935de7e8103736/FLAGb148c8ccd [2023-01-27 19:59:19,550 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d9fc0be/9b4a50cb96c945cb80935de7e8103736 [2023-01-27 19:59:19,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:59:19,553 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:59:19,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:59:19,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:59:19,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:59:19,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5955b9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19, skipping insertion in model container [2023-01-27 19:59:19,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:59:19,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:59:19,669 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/chl-array-int-trans.wvr.c[2728,2741] [2023-01-27 19:59:19,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:59:19,681 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:59:19,696 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/chl-array-int-trans.wvr.c[2728,2741] [2023-01-27 19:59:19,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:59:19,712 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:59:19,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19 WrapperNode [2023-01-27 19:59:19,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:59:19,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:59:19,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:59:19,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:59:19,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,766 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 283 [2023-01-27 19:59:19,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:59:19,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:59:19,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:59:19,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:59:19,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:59:19,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:59:19,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:59:19,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:59:19,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (1/1) ... [2023-01-27 19:59:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:59:19,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:19,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:59:19,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:59:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:59:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:59:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:59:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:59:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 19:59:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 19:59:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 19:59:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 19:59:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 19:59:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 19:59:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:59:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:59:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:59:19,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:59:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:59:19,875 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:59:19,992 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:59:19,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:59:20,309 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:59:20,318 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:59:20,319 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 19:59:20,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:59:20 BoogieIcfgContainer [2023-01-27 19:59:20,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:59:20,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:59:20,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:59:20,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:59:20,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:59:19" (1/3) ... [2023-01-27 19:59:20,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655643fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:59:20, skipping insertion in model container [2023-01-27 19:59:20,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:59:19" (2/3) ... [2023-01-27 19:59:20,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655643fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:59:20, skipping insertion in model container [2023-01-27 19:59:20,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:59:20" (3/3) ... [2023-01-27 19:59:20,327 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-01-27 19:59:20,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:59:20,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:59:20,339 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:59:20,411 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 19:59:20,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 318 transitions, 660 flow [2023-01-27 19:59:20,533 INFO L130 PetriNetUnfolder]: 28/315 cut-off events. [2023-01-27 19:59:20,533 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:59:20,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 28/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 504 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-01-27 19:59:20,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 318 transitions, 660 flow [2023-01-27 19:59:20,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 305 transitions, 628 flow [2023-01-27 19:59:20,547 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:59:20,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 305 transitions, 628 flow [2023-01-27 19:59:20,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 305 transitions, 628 flow [2023-01-27 19:59:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 305 transitions, 628 flow [2023-01-27 19:59:20,599 INFO L130 PetriNetUnfolder]: 28/305 cut-off events. [2023-01-27 19:59:20,600 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:59:20,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 305 events. 28/305 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 503 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2023-01-27 19:59:20,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-01-27 19:59:27,912 INFO L134 LiptonReduction]: Checked pairs total: 16298 [2023-01-27 19:59:27,913 INFO L136 LiptonReduction]: Total number of compositions: 336 [2023-01-27 19:59:27,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:59:27,932 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;@2c748848, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:59:27,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 19:59:27,937 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-01-27 19:59:27,937 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:59:27,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:27,938 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 19:59:27,938 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 19:59:27,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1381309772, now seen corresponding path program 1 times [2023-01-27 19:59:27,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:27,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586132595] [2023-01-27 19:59:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:28,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:28,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586132595] [2023-01-27 19:59:28,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586132595] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:28,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:59:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144095843] [2023-01-27 19:59:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:59:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:28,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:59:28,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:59:28,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 654 [2023-01-27 19:59:28,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:28,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:28,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 654 [2023-01-27 19:59:28,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:28,890 INFO L130 PetriNetUnfolder]: 1848/2604 cut-off events. [2023-01-27 19:59:28,890 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-01-27 19:59:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 2604 events. 1848/2604 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10381 event pairs, 646 based on Foata normal form. 1/1980 useless extension candidates. Maximal degree in co-relation 2528. Up to 1171 conditions per place. [2023-01-27 19:59:28,902 INFO L137 encePairwiseOnDemand]: 647/654 looper letters, 92 selfloop transitions, 6 changer transitions 4/102 dead transitions. [2023-01-27 19:59:28,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 102 transitions, 462 flow [2023-01-27 19:59:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:59:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:59:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1549 transitions. [2023-01-27 19:59:28,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39475025484199794 [2023-01-27 19:59:28,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1549 transitions. [2023-01-27 19:59:28,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1549 transitions. [2023-01-27 19:59:28,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:28,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1549 transitions. [2023-01-27 19:59:28,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:28,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 654.0) internal successors, (4578), 7 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:28,933 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 654.0) internal successors, (4578), 7 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:28,935 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 6 states and 1549 transitions. [2023-01-27 19:59:28,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 102 transitions, 462 flow [2023-01-27 19:59:28,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 102 transitions, 426 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 19:59:28,940 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 117 flow [2023-01-27 19:59:28,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-27 19:59:28,944 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2023-01-27 19:59:28,944 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 117 flow [2023-01-27 19:59:28,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:28,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:28,945 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 19:59:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:59:28,945 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 19:59:28,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1395278390, now seen corresponding path program 1 times [2023-01-27 19:59:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:28,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869336853] [2023-01-27 19:59:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869336853] [2023-01-27 19:59:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869336853] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645920749] [2023-01-27 19:59:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:29,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:29,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:29,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:59:29,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:59:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:29,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 19:59:29,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:29,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645920749] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:29,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:29,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 13 [2023-01-27 19:59:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239640152] [2023-01-27 19:59:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:59:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:59:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-27 19:59:29,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 654 [2023-01-27 19:59:29,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:29,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:29,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 654 [2023-01-27 19:59:29,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:29,991 INFO L130 PetriNetUnfolder]: 3853/5458 cut-off events. [2023-01-27 19:59:29,991 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2023-01-27 19:59:29,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11824 conditions, 5458 events. 3853/5458 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 26177 event pairs, 744 based on Foata normal form. 1/4159 useless extension candidates. Maximal degree in co-relation 5912. Up to 2332 conditions per place. [2023-01-27 19:59:30,011 INFO L137 encePairwiseOnDemand]: 644/654 looper letters, 141 selfloop transitions, 11 changer transitions 8/160 dead transitions. [2023-01-27 19:59:30,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 160 transitions, 748 flow [2023-01-27 19:59:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2565 transitions. [2023-01-27 19:59:30,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922018348623853 [2023-01-27 19:59:30,016 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2565 transitions. [2023-01-27 19:59:30,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2565 transitions. [2023-01-27 19:59:30,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:30,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2565 transitions. [2023-01-27 19:59:30,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 256.5) internal successors, (2565), 10 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:30,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:30,029 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:30,029 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 117 flow. Second operand 10 states and 2565 transitions. [2023-01-27 19:59:30,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 160 transitions, 748 flow [2023-01-27 19:59:30,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 160 transitions, 739 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 19:59:30,033 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 196 flow [2023-01-27 19:59:30,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-01-27 19:59:30,033 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-01-27 19:59:30,033 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 196 flow [2023-01-27 19:59:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:30,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:30,034 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 19:59:30,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:30,239 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 19:59:30,240 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 19:59:30,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1072286339, now seen corresponding path program 1 times [2023-01-27 19:59:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433887923] [2023-01-27 19:59:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433887923] [2023-01-27 19:59:30,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433887923] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123055417] [2023-01-27 19:59:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:30,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:30,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:30,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:59:30,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:59:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:30,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 19:59:30,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:30,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:30,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123055417] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:30,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:30,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-01-27 19:59:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741742136] [2023-01-27 19:59:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:30,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:59:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:30,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:59:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-01-27 19:59:30,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 654 [2023-01-27 19:59:30,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:30,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:30,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 654 [2023-01-27 19:59:30,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:31,546 INFO L130 PetriNetUnfolder]: 5619/8120 cut-off events. [2023-01-27 19:59:31,546 INFO L131 PetriNetUnfolder]: For 902/902 co-relation queries the response was YES. [2023-01-27 19:59:31,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18141 conditions, 8120 events. 5619/8120 cut-off events. For 902/902 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 42062 event pairs, 1656 based on Foata normal form. 0/6236 useless extension candidates. Maximal degree in co-relation 11716. Up to 2674 conditions per place. [2023-01-27 19:59:31,573 INFO L137 encePairwiseOnDemand]: 644/654 looper letters, 161 selfloop transitions, 17 changer transitions 2/180 dead transitions. [2023-01-27 19:59:31,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 180 transitions, 910 flow [2023-01-27 19:59:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:59:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:59:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2539 transitions. [2023-01-27 19:59:31,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882262996941896 [2023-01-27 19:59:31,577 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2539 transitions. [2023-01-27 19:59:31,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2539 transitions. [2023-01-27 19:59:31,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:31,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2539 transitions. [2023-01-27 19:59:31,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 253.9) internal successors, (2539), 10 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,590 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 654.0) internal successors, (7194), 11 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,590 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 196 flow. Second operand 10 states and 2539 transitions. [2023-01-27 19:59:31,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 180 transitions, 910 flow [2023-01-27 19:59:31,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 180 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:59:31,594 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 266 flow [2023-01-27 19:59:31,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-01-27 19:59:31,594 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-01-27 19:59:31,594 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 266 flow [2023-01-27 19:59:31,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:31,595 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, 1, 1] [2023-01-27 19:59:31,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 19:59:31,800 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 19:59:31,800 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 19:59:31,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash -885160629, now seen corresponding path program 1 times [2023-01-27 19:59:31,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:31,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349505302] [2023-01-27 19:59:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:59:31,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:31,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349505302] [2023-01-27 19:59:31,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349505302] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:31,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 19:59:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658152068] [2023-01-27 19:59:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:31,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:59:31,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:31,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:59:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:59:31,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 654 [2023-01-27 19:59:31,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:31,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:31,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 654 [2023-01-27 19:59:31,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:32,313 INFO L130 PetriNetUnfolder]: 3495/5132 cut-off events. [2023-01-27 19:59:32,313 INFO L131 PetriNetUnfolder]: For 1807/1807 co-relation queries the response was YES. [2023-01-27 19:59:32,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12286 conditions, 5132 events. 3495/5132 cut-off events. For 1807/1807 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24773 event pairs, 1802 based on Foata normal form. 0/4432 useless extension candidates. Maximal degree in co-relation 7166. Up to 3137 conditions per place. [2023-01-27 19:59:32,327 INFO L137 encePairwiseOnDemand]: 649/654 looper letters, 42 selfloop transitions, 4 changer transitions 51/97 dead transitions. [2023-01-27 19:59:32,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 572 flow [2023-01-27 19:59:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:59:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:59:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1294 transitions. [2023-01-27 19:59:32,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39571865443425075 [2023-01-27 19:59:32,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1294 transitions. [2023-01-27 19:59:32,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1294 transitions. [2023-01-27 19:59:32,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:32,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1294 transitions. [2023-01-27 19:59:32,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.8) internal successors, (1294), 5 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,336 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,336 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 266 flow. Second operand 5 states and 1294 transitions. [2023-01-27 19:59:32,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 572 flow [2023-01-27 19:59:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 558 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 19:59:32,342 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 195 flow [2023-01-27 19:59:32,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-01-27 19:59:32,343 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-01-27 19:59:32,343 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 195 flow [2023-01-27 19:59:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:32,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:32,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 19:59:32,344 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 19:59:32,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1196564902, now seen corresponding path program 1 times [2023-01-27 19:59:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117943610] [2023-01-27 19:59:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:32,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117943610] [2023-01-27 19:59:32,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117943610] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:59:32,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:59:32,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:59:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700084135] [2023-01-27 19:59:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:59:32,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:59:32,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:59:32,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 654 [2023-01-27 19:59:32,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:32,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 654 [2023-01-27 19:59:32,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:32,666 INFO L130 PetriNetUnfolder]: 1573/2264 cut-off events. [2023-01-27 19:59:32,667 INFO L131 PetriNetUnfolder]: For 998/998 co-relation queries the response was YES. [2023-01-27 19:59:32,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5468 conditions, 2264 events. 1573/2264 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8876 event pairs, 882 based on Foata normal form. 50/2032 useless extension candidates. Maximal degree in co-relation 5448. Up to 1658 conditions per place. [2023-01-27 19:59:32,673 INFO L137 encePairwiseOnDemand]: 649/654 looper letters, 37 selfloop transitions, 2 changer transitions 44/83 dead transitions. [2023-01-27 19:59:32,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 452 flow [2023-01-27 19:59:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:59:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:59:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1296 transitions. [2023-01-27 19:59:32,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963302752293578 [2023-01-27 19:59:32,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1296 transitions. [2023-01-27 19:59:32,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1296 transitions. [2023-01-27 19:59:32,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:32,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1296 transitions. [2023-01-27 19:59:32,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.2) internal successors, (1296), 5 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 654.0) internal successors, (3924), 6 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,682 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 195 flow. Second operand 5 states and 1296 transitions. [2023-01-27 19:59:32,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 452 flow [2023-01-27 19:59:32,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 403 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-01-27 19:59:32,684 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 126 flow [2023-01-27 19:59:32,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-01-27 19:59:32,685 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-01-27 19:59:32,685 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 126 flow [2023-01-27 19:59:32,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:32,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:32,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:59:32,686 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 19:59:32,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1703835318, now seen corresponding path program 1 times [2023-01-27 19:59:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240966893] [2023-01-27 19:59:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:59:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240966893] [2023-01-27 19:59:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240966893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909578853] [2023-01-27 19:59:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:32,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:32,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:59:32,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:59:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:33,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 19:59:33,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:33,117 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 19:59:33,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:33,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909578853] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:59:33,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:59:33,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-01-27 19:59:33,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827078880] [2023-01-27 19:59:33,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:59:33,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 19:59:33,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:33,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 19:59:33,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-01-27 19:59:33,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 654 [2023-01-27 19:59:33,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 126 flow. Second operand has 18 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:33,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:33,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 654 [2023-01-27 19:59:33,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:34,535 INFO L130 PetriNetUnfolder]: 5562/8013 cut-off events. [2023-01-27 19:59:34,535 INFO L131 PetriNetUnfolder]: For 2569/2569 co-relation queries the response was YES. [2023-01-27 19:59:34,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18100 conditions, 8013 events. 5562/8013 cut-off events. For 2569/2569 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40995 event pairs, 1689 based on Foata normal form. 6/6885 useless extension candidates. Maximal degree in co-relation 18083. Up to 1524 conditions per place. [2023-01-27 19:59:34,552 INFO L137 encePairwiseOnDemand]: 642/654 looper letters, 137 selfloop transitions, 16 changer transitions 163/316 dead transitions. [2023-01-27 19:59:34,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 316 transitions, 1483 flow [2023-01-27 19:59:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 19:59:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 19:59:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6042 transitions. [2023-01-27 19:59:34,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36954128440366973 [2023-01-27 19:59:34,563 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6042 transitions. [2023-01-27 19:59:34,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6042 transitions. [2023-01-27 19:59:34,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:34,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6042 transitions. [2023-01-27 19:59:34,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 241.68) internal successors, (6042), 25 states have internal predecessors, (6042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:34,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 654.0) internal successors, (17004), 26 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:34,590 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 654.0) internal successors, (17004), 26 states have internal predecessors, (17004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:34,591 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 126 flow. Second operand 25 states and 6042 transitions. [2023-01-27 19:59:34,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 316 transitions, 1483 flow [2023-01-27 19:59:34,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 316 transitions, 1444 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-27 19:59:34,594 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 240 flow [2023-01-27 19:59:34,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-01-27 19:59:34,595 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-01-27 19:59:34,595 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 240 flow [2023-01-27 19:59:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:34,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:34,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:34,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:34,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:34,804 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 19:59:34,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:34,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1693095200, now seen corresponding path program 1 times [2023-01-27 19:59:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:34,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624543455] [2023-01-27 19:59:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:34,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:34,939 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 19:59:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624543455] [2023-01-27 19:59:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624543455] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925468817] [2023-01-27 19:59:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:34,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:34,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:59:34,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:59:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:35,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 19:59:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:35,143 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 19:59:35,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 19:59:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925468817] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:59:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2023-01-27 19:59:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671946295] [2023-01-27 19:59:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:59:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:59:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:59:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-01-27 19:59:35,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 654 [2023-01-27 19:59:35,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:35,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:35,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 654 [2023-01-27 19:59:35,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:35,706 INFO L130 PetriNetUnfolder]: 4352/6331 cut-off events. [2023-01-27 19:59:35,706 INFO L131 PetriNetUnfolder]: For 13601/13601 co-relation queries the response was YES. [2023-01-27 19:59:35,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19251 conditions, 6331 events. 4352/6331 cut-off events. For 13601/13601 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31465 event pairs, 1173 based on Foata normal form. 0/5874 useless extension candidates. Maximal degree in co-relation 16152. Up to 4090 conditions per place. [2023-01-27 19:59:35,737 INFO L137 encePairwiseOnDemand]: 646/654 looper letters, 65 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-01-27 19:59:35,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 505 flow [2023-01-27 19:59:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 19:59:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 19:59:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1718 transitions. [2023-01-27 19:59:35,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37527304499781566 [2023-01-27 19:59:35,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1718 transitions. [2023-01-27 19:59:35,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1718 transitions. [2023-01-27 19:59:35,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:35,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1718 transitions. [2023-01-27 19:59:35,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:35,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 654.0) internal successors, (5232), 8 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:35,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 654.0) internal successors, (5232), 8 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:35,748 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 240 flow. Second operand 7 states and 1718 transitions. [2023-01-27 19:59:35,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 505 flow [2023-01-27 19:59:35,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 451 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-27 19:59:35,776 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 240 flow [2023-01-27 19:59:35,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-01-27 19:59:35,777 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-01-27 19:59:35,777 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 240 flow [2023-01-27 19:59:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:35,778 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, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:35,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:59:35,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:35,983 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 19:59:35,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:35,984 INFO L85 PathProgramCache]: Analyzing trace with hash 975190112, now seen corresponding path program 1 times [2023-01-27 19:59:35,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:35,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326169867] [2023-01-27 19:59:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:35,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 19:59:36,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326169867] [2023-01-27 19:59:36,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326169867] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:36,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443903736] [2023-01-27 19:59:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:36,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:36,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:36,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:59:36,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 19:59:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:36,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 19:59:36,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 19:59:36,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 19:59:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443903736] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:59:36,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:59:36,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 19:59:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112144663] [2023-01-27 19:59:36,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:59:36,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 19:59:36,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:59:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 19:59:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-01-27 19:59:36,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 654 [2023-01-27 19:59:36,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 240 flow. Second operand has 14 states, 14 states have (on average 244.28571428571428) internal successors, (3420), 14 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:36,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:59:36,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 654 [2023-01-27 19:59:36,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:59:37,755 INFO L130 PetriNetUnfolder]: 10150/14755 cut-off events. [2023-01-27 19:59:37,756 INFO L131 PetriNetUnfolder]: For 13466/13466 co-relation queries the response was YES. [2023-01-27 19:59:37,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41872 conditions, 14755 events. 10150/14755 cut-off events. For 13466/13466 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 82381 event pairs, 4193 based on Foata normal form. 6/14759 useless extension candidates. Maximal degree in co-relation 29773. Up to 5684 conditions per place. [2023-01-27 19:59:37,809 INFO L137 encePairwiseOnDemand]: 645/654 looper letters, 167 selfloop transitions, 18 changer transitions 8/193 dead transitions. [2023-01-27 19:59:37,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 193 transitions, 1189 flow [2023-01-27 19:59:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 19:59:37,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 19:59:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3047 transitions. [2023-01-27 19:59:37,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38825178389398574 [2023-01-27 19:59:37,815 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3047 transitions. [2023-01-27 19:59:37,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3047 transitions. [2023-01-27 19:59:37,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:59:37,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3047 transitions. [2023-01-27 19:59:37,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 253.91666666666666) internal successors, (3047), 12 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 654.0) internal successors, (8502), 13 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,827 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 654.0) internal successors, (8502), 13 states have internal predecessors, (8502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,827 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 240 flow. Second operand 12 states and 3047 transitions. [2023-01-27 19:59:37,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 193 transitions, 1189 flow [2023-01-27 19:59:37,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 193 transitions, 1166 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 19:59:37,838 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 375 flow [2023-01-27 19:59:37,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=375, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-01-27 19:59:37,840 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2023-01-27 19:59:37,840 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 375 flow [2023-01-27 19:59:37,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 244.28571428571428) internal successors, (3420), 14 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:59:37,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:59:37,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:59:37,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 19:59:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:38,047 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 19:59:38,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:59:38,047 INFO L85 PathProgramCache]: Analyzing trace with hash 241561077, now seen corresponding path program 1 times [2023-01-27 19:59:38,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:59:38,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465967015] [2023-01-27 19:59:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:59:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:38,986 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 19:59:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:59:38,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465967015] [2023-01-27 19:59:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465967015] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:59:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488002665] [2023-01-27 19:59:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:59:38,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:59:38,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:59:38,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:59:38,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 19:59:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:59:39,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 62 conjunts are in the unsatisfiable core [2023-01-27 19:59:39,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:59:39,260 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 19:59:39,303 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 19:59:39,389 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 19:59:39,464 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 19:59:39,873 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-27 19:59:39,873 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 52 treesize of output 40 [2023-01-27 19:59:39,924 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 19:59:39,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:59:40,779 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse2 (+ .cse10 c_~a1~0.offset)) (.cse4 (+ .cse10 c_~a2~0.offset))) (let ((.cse0 (forall ((v_ArrVal_427 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse2) (+ (select .cse9 .cse4) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (or (< 0 c_~n1~0) .cse0) (or .cse0 (< 0 c_~n3~0)) (forall ((v_ArrVal_427 (Array Int Int)) (~a2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse3 (select .cse7 ~a2~0.base)) (.cse6 (select (select .cse7 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse1 (select .cse7 ~a1~0.base))) (let ((.cse5 (select .cse1 c_~a1~0.offset))) (or (< (select .cse1 .cse2) (+ (select .cse3 .cse4) 1)) (< (+ .cse5 2147483648) .cse6) (< .cse6 .cse5) (= .cse5 .cse6))))) (< (select .cse3 c_~a2~0.offset) (+ .cse6 1)))))))))) is different from false [2023-01-27 19:59:40,917 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse3 (+ .cse10 c_~a1~0.offset)) (.cse5 (+ .cse10 c_~a2~0.offset))) (let ((.cse7 (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse3) (+ (select .cse9 .cse5) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int)) (~a2~0.base Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427))) (let ((.cse4 (select .cse6 ~a2~0.base)) (.cse0 (select (select .cse6 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse2 (select .cse6 ~a1~0.base))) (let ((.cse1 (select .cse2 c_~a1~0.offset))) (or (< .cse0 .cse1) (< (+ .cse1 2147483648) .cse0) (< (select .cse2 .cse3) (+ (select .cse4 .cse5) 1)) (= .cse1 .cse0))))) (< (select .cse4 c_~a2~0.offset) (+ .cse0 1)))))) (or .cse7 (< 0 c_~n3~0)) (or .cse7 (< 0 c_~n1~0)))))) is different from false [2023-01-27 19:59:41,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:41,122 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 111 treesize of output 75 [2023-01-27 19:59:41,156 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-01-27 19:59:41,156 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 4971 treesize of output 4736 [2023-01-27 19:59:41,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:41,331 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 2347 treesize of output 2115 [2023-01-27 19:59:41,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:41,396 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 2091 treesize of output 1987 [2023-01-27 19:59:41,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 19:59:41,462 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 1963 treesize of output 1923 [2023-01-27 20:01:01,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:01:01,876 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 111 treesize of output 75 [2023-01-27 20:01:01,928 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-01-27 20:01:01,929 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 29931 treesize of output 28416 [2023-01-27 20:01:02,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:01:02,277 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 2347 treesize of output 2115 [2023-01-27 20:01:02,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:01:02,337 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 2091 treesize of output 2051 [2023-01-27 20:01:02,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:01:02,387 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 2027 treesize of output 1923 [2023-01-27 20:03:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:03:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488002665] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:40,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:40,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 41 [2023-01-27 20:03:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894961875] [2023-01-27 20:03:40,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-01-27 20:03:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:40,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-01-27 20:03:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1420, Unknown=16, NotChecked=158, Total=1806 [2023-01-27 20:03:40,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 654 [2023-01-27 20:03:40,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 375 flow. Second operand has 43 states, 43 states have (on average 183.06976744186048) internal successors, (7872), 43 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states 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 20:03:40,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:40,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 654 [2023-01-27 20:03:40,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:46,305 INFO L130 PetriNetUnfolder]: 22407/33056 cut-off events. [2023-01-27 20:03:46,305 INFO L131 PetriNetUnfolder]: For 23840/23840 co-relation queries the response was YES. [2023-01-27 20:03:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91731 conditions, 33056 events. 22407/33056 cut-off events. For 23840/23840 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 215167 event pairs, 5202 based on Foata normal form. 14/33070 useless extension candidates. Maximal degree in co-relation 65222. Up to 13419 conditions per place. [2023-01-27 20:03:46,543 INFO L137 encePairwiseOnDemand]: 635/654 looper letters, 214 selfloop transitions, 64 changer transitions 28/306 dead transitions. [2023-01-27 20:03:46,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 306 transitions, 1830 flow [2023-01-27 20:03:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 20:03:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 20:03:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5130 transitions. [2023-01-27 20:03:46,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.290519877675841 [2023-01-27 20:03:46,554 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5130 transitions. [2023-01-27 20:03:46,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5130 transitions. [2023-01-27 20:03:46,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:46,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5130 transitions. [2023-01-27 20:03:46,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 190.0) internal successors, (5130), 27 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states 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 20:03:46,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 654.0) internal successors, (18312), 28 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states 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 20:03:46,579 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 654.0) internal successors, (18312), 28 states have internal predecessors, (18312), 0 states have call successors, (0), 0 states 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 20:03:46,579 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 375 flow. Second operand 27 states and 5130 transitions. [2023-01-27 20:03:46,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 306 transitions, 1830 flow [2023-01-27 20:03:46,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 306 transitions, 1817 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 20:03:46,602 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 845 flow [2023-01-27 20:03:46,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=845, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2023-01-27 20:03:46,603 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-01-27 20:03:46,603 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 845 flow [2023-01-27 20:03:46,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 183.06976744186048) internal successors, (7872), 43 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states 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 20:03:46,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:46,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:46,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 20:03:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:46,810 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 20:03:46,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1846702689, now seen corresponding path program 2 times [2023-01-27 20:03:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625432134] [2023-01-27 20:03:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:47,644 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 20:03:47,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625432134] [2023-01-27 20:03:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625432134] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592209591] [2023-01-27 20:03:47,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:03:47,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:47,646 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 20:03:47,649 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 20:03:47,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:03:47,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-27 20:03:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:48,350 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-27 20:03:48,350 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 52 treesize of output 40 [2023-01-27 20:03:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:03:48,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:03:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592209591] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:48,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:03:48,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-01-27 20:03:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020816291] [2023-01-27 20:03:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:48,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:03:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:03:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:03:48,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 654 [2023-01-27 20:03:48,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 115 transitions, 845 flow. Second operand has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states 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 20:03:48,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:48,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 654 [2023-01-27 20:03:48,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:53,232 INFO L130 PetriNetUnfolder]: 27720/41392 cut-off events. [2023-01-27 20:03:53,232 INFO L131 PetriNetUnfolder]: For 150331/150331 co-relation queries the response was YES. [2023-01-27 20:03:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167274 conditions, 41392 events. 27720/41392 cut-off events. For 150331/150331 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 288638 event pairs, 7145 based on Foata normal form. 7/41399 useless extension candidates. Maximal degree in co-relation 166493. Up to 13495 conditions per place. [2023-01-27 20:03:53,749 INFO L137 encePairwiseOnDemand]: 637/654 looper letters, 227 selfloop transitions, 33 changer transitions 14/274 dead transitions. [2023-01-27 20:03:53,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 274 transitions, 2378 flow [2023-01-27 20:03:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:03:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:03:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3010 transitions. [2023-01-27 20:03:53,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35403434486003293 [2023-01-27 20:03:53,752 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3010 transitions. [2023-01-27 20:03:53,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3010 transitions. [2023-01-27 20:03:53,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:53,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3010 transitions. [2023-01-27 20:03:53,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 231.53846153846155) internal successors, (3010), 13 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states 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 20:03:53,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states 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 20:03:53,761 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states 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 20:03:53,761 INFO L175 Difference]: Start difference. First operand has 122 places, 115 transitions, 845 flow. Second operand 13 states and 3010 transitions. [2023-01-27 20:03:53,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 274 transitions, 2378 flow [2023-01-27 20:03:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 274 transitions, 2222 flow, removed 68 selfloop flow, removed 9 redundant places. [2023-01-27 20:03:54,238 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 1047 flow [2023-01-27 20:03:54,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1047, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2023-01-27 20:03:54,239 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-01-27 20:03:54,239 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 1047 flow [2023-01-27 20:03:54,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states 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 20:03:54,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:54,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:54,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 20:03:54,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:54,464 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 20:03:54,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash 801462021, now seen corresponding path program 3 times [2023-01-27 20:03:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:54,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468214586] [2023-01-27 20:03:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:54,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:55,275 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 20:03:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468214586] [2023-01-27 20:03:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468214586] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:55,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907606227] [2023-01-27 20:03:55,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:03:55,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:55,285 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 20:03:55,286 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 20:03:55,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:03:55,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:55,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-27 20:03:55,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:56,144 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-27 20:03:56,144 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 52 treesize of output 40 [2023-01-27 20:03:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:03:56,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:03:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907606227] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:56,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:03:56,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-01-27 20:03:56,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572597950] [2023-01-27 20:03:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:56,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:03:56,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:56,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:03:56,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:03:56,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 654 [2023-01-27 20:03:56,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 1047 flow. Second operand has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states 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 20:03:56,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:56,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 654 [2023-01-27 20:03:56,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:04:03,274 INFO L130 PetriNetUnfolder]: 37219/55811 cut-off events. [2023-01-27 20:04:03,274 INFO L131 PetriNetUnfolder]: For 288919/288919 co-relation queries the response was YES. [2023-01-27 20:04:03,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257529 conditions, 55811 events. 37219/55811 cut-off events. For 288919/288919 co-relation queries the response was YES. Maximal size of possible extension queue 2086. Compared 409290 event pairs, 10693 based on Foata normal form. 7/55818 useless extension candidates. Maximal degree in co-relation 256402. Up to 25171 conditions per place. [2023-01-27 20:04:03,995 INFO L137 encePairwiseOnDemand]: 639/654 looper letters, 266 selfloop transitions, 44 changer transitions 12/322 dead transitions. [2023-01-27 20:04:03,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 322 transitions, 3162 flow [2023-01-27 20:04:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:04:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:04:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3001 transitions. [2023-01-27 20:04:03,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35297577040696304 [2023-01-27 20:04:03,998 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3001 transitions. [2023-01-27 20:04:03,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3001 transitions. [2023-01-27 20:04:03,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:04:03,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3001 transitions. [2023-01-27 20:04:04,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 230.84615384615384) internal successors, (3001), 13 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states 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 20:04:04,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states 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 20:04:04,006 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 654.0) internal successors, (9156), 14 states have internal predecessors, (9156), 0 states have call successors, (0), 0 states 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 20:04:04,006 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 1047 flow. Second operand 13 states and 3001 transitions. [2023-01-27 20:04:04,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 322 transitions, 3162 flow [2023-01-27 20:04:07,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 322 transitions, 3056 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-01-27 20:04:07,915 INFO L231 Difference]: Finished difference. Result has 145 places, 157 transitions, 1429 flow [2023-01-27 20:04:07,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1429, PETRI_PLACES=145, PETRI_TRANSITIONS=157} [2023-01-27 20:04:07,915 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 107 predicate places. [2023-01-27 20:04:07,915 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 157 transitions, 1429 flow [2023-01-27 20:04:07,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 220.9375) internal successors, (3535), 16 states have internal predecessors, (3535), 0 states have call successors, (0), 0 states 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 20:04:07,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:04:07,916 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:04:07,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:04:08,121 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,SelfDestructingSolverStorable10 [2023-01-27 20:04:08,121 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 20:04:08,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:04:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash 785158062, now seen corresponding path program 1 times [2023-01-27 20:04:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:04:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563823466] [2023-01-27 20:04:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:04:08,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:04:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:04:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:04:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:04:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563823466] [2023-01-27 20:04:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563823466] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:04:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550209607] [2023-01-27 20:04:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:04:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:04:08,793 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 20:04:08,813 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 20:04:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:04:08,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 68 conjunts are in the unsatisfiable core [2023-01-27 20:04:08,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:04:09,236 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 20:04:09,295 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 20:04:09,361 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 20:04:09,416 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 20:04:09,923 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-27 20:04:09,923 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 100 treesize of output 64 [2023-01-27 20:04:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:04:09,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:04:11,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:04:11,095 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 20:04:11,133 INFO L321 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2023-01-27 20:04:11,134 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 9451 treesize of output 8964 [2023-01-27 20:04:11,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:04:11,631 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 2219 treesize of output 2179 [2023-01-27 20:04:11,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:04:11,697 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 2155 treesize of output 2051 [2023-01-27 20:04:11,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:04:11,769 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 2027 treesize of output 1795 [2023-01-27 20:04:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:04:30,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550209607] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:04:30,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:04:30,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 46 [2023-01-27 20:04:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924177017] [2023-01-27 20:04:30,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:04:30,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-01-27 20:04:30,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:04:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-01-27 20:04:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1849, Unknown=8, NotChecked=0, Total=2256 [2023-01-27 20:04:30,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 654 [2023-01-27 20:04:30,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 1429 flow. Second operand has 48 states, 48 states have (on average 182.875) internal successors, (8778), 48 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states 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 20:04:30,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:04:30,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 654 [2023-01-27 20:04:30,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:04:49,621 INFO L130 PetriNetUnfolder]: 45607/69348 cut-off events. [2023-01-27 20:04:49,621 INFO L131 PetriNetUnfolder]: For 443693/443693 co-relation queries the response was YES. [2023-01-27 20:04:50,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343103 conditions, 69348 events. 45607/69348 cut-off events. For 443693/443693 co-relation queries the response was YES. Maximal size of possible extension queue 2389. Compared 525509 event pairs, 12600 based on Foata normal form. 40/69388 useless extension candidates. Maximal degree in co-relation 341485. Up to 15983 conditions per place. [2023-01-27 20:04:50,668 INFO L137 encePairwiseOnDemand]: 634/654 looper letters, 1085 selfloop transitions, 231 changer transitions 108/1424 dead transitions. [2023-01-27 20:04:50,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1424 transitions, 13675 flow [2023-01-27 20:04:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-01-27 20:04:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-01-27 20:04:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 17488 transitions. [2023-01-27 20:04:50,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2938468259569177 [2023-01-27 20:04:50,683 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 17488 transitions. [2023-01-27 20:04:50,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 17488 transitions. [2023-01-27 20:04:50,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:04:50,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 17488 transitions. [2023-01-27 20:04:50,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 192.17582417582418) internal successors, (17488), 91 states have internal predecessors, (17488), 0 states have call successors, (0), 0 states 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 20:04:50,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 654.0) internal successors, (60168), 92 states have internal predecessors, (60168), 0 states have call successors, (0), 0 states 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 20:04:50,738 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 654.0) internal successors, (60168), 92 states have internal predecessors, (60168), 0 states have call successors, (0), 0 states 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 20:04:50,738 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 1429 flow. Second operand 91 states and 17488 transitions. [2023-01-27 20:04:50,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1424 transitions, 13675 flow [2023-01-27 20:04:56,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1424 transitions, 12765 flow, removed 433 selfloop flow, removed 5 redundant places. [2023-01-27 20:04:56,693 INFO L231 Difference]: Finished difference. Result has 287 places, 354 transitions, 4125 flow [2023-01-27 20:04:56,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=654, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=4125, PETRI_PLACES=287, PETRI_TRANSITIONS=354} [2023-01-27 20:04:56,694 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 249 predicate places. [2023-01-27 20:04:56,694 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 354 transitions, 4125 flow [2023-01-27 20:04:56,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 182.875) internal successors, (8778), 48 states have internal predecessors, (8778), 0 states have call successors, (0), 0 states 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 20:04:56,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:04:56,695 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, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:04:56,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-27 20:04:56,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:56,900 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 20:04:56,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:04:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1816406924, now seen corresponding path program 2 times [2023-01-27 20:04:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:04:56,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665198656] [2023-01-27 20:04:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:04:56,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:04:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:04:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:04:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:04:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665198656] [2023-01-27 20:04:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665198656] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:04:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675149738] [2023-01-27 20:04:57,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:04:57,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:57,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:04:57,759 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 20:04:57,761 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 20:04:57,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:04:57,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:04:57,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:04:57,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:04:58,257 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 20:04:58,257 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 89 treesize of output 45 [2023-01-27 20:04:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 20:04:58,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:04:59,395 INFO L321 Elim1Store]: treesize reduction 44, result has 93.0 percent of original size [2023-01-27 20:04:59,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 153 treesize of output 633 Received shutdown request... [2023-01-27 20:13:27,525 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 20:13:27,526 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:13:27,541 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 20:13:27,564 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:13:27,564 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 20:13:27,733 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,SelfDestructingSolverStorable12 [2023-01-27 20:13:27,733 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 42ms.. [2023-01-27 20:13:27,735 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:13:27,735 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:13:27,735 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:13:27,735 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:13:27,741 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:13:27,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:13:27,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:13:27 BasicIcfg [2023-01-27 20:13:27,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:13:27,752 INFO L158 Benchmark]: Toolchain (without parser) took 848194.49ms. Allocated memory was 343.9MB in the beginning and 9.1GB in the end (delta: 8.8GB). Free memory was 312.7MB in the beginning and 2.6GB in the end (delta: -2.3GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-01-27 20:13:27,752 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:13:27,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.44ms. Allocated memory is still 343.9MB. Free memory was 312.7MB in the beginning and 300.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:13:27,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.75ms. Allocated memory is still 343.9MB. Free memory was 300.6MB in the beginning and 298.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:13:27,753 INFO L158 Benchmark]: Boogie Preprocessor took 43.82ms. Allocated memory is still 343.9MB. Free memory was 298.1MB in the beginning and 296.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:13:27,753 INFO L158 Benchmark]: RCFGBuilder took 509.83ms. Allocated memory is still 343.9MB. Free memory was 296.0MB in the beginning and 271.2MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 20:13:27,753 INFO L158 Benchmark]: TraceAbstraction took 847423.84ms. Allocated memory was 343.9MB in the beginning and 9.1GB in the end (delta: 8.8GB). Free memory was 270.8MB in the beginning and 2.6GB in the end (delta: -2.3GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-01-27 20:13:27,754 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 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 159.44ms. Allocated memory is still 343.9MB. Free memory was 312.7MB in the beginning and 300.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.75ms. Allocated memory is still 343.9MB. Free memory was 300.6MB in the beginning and 298.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.82ms. Allocated memory is still 343.9MB. Free memory was 298.1MB in the beginning and 296.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 509.83ms. Allocated memory is still 343.9MB. Free memory was 296.0MB in the beginning and 271.2MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 847423.84ms. Allocated memory was 343.9MB in the beginning and 9.1GB in the end (delta: 8.8GB). Free memory was 270.8MB in the beginning and 2.6GB in the end (delta: -2.3GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 287 PlacesBefore, 38 PlacesAfterwards, 305 TransitionsBefore, 36 TransitionsAfterwards, 14784 CoEnabledTransitionPairs, 8 FixpointIterations, 133 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 38 ConcurrentYvCompositions, 20 ChoiceCompositions, 336 TotalNumberOfCompositions, 16298 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13847, independent: 13700, independent conditional: 0, independent unconditional: 13700, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8584, independent: 8544, independent conditional: 0, independent unconditional: 8544, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13847, independent: 5156, independent conditional: 0, independent unconditional: 5156, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 8584, unknown conditional: 0, unknown unconditional: 8584] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 42ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 42ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 42ms.. - TimeoutResultAtElement [Line: 100]: 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 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 42ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 414 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: 847.3s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 55.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5477 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5477 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 477 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10178 IncrementalHoareTripleChecker+Invalid, 10775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 0 mSDtfsCounter, 10178 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 718 GetRequests, 316 SyntacticMatches, 4 SemanticMatches, 398 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7764 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4125occurred in iteration=12, InterpolantAutomatonStates: 224, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 269.7s InterpolantComputationTime, 583 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 748 ConstructedInterpolants, 49 QuantifiedInterpolants, 11527 SizeOfPredicates, 223 NumberOfNonLiveVariables, 2823 ConjunctsInSsa, 283 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 48/88 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